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</pre><pre class="rust"><code><span class="kw">use</span> <span class="ident">std::collections::BTreeSet</span>;
<span class="kw">use</span> <span class="ident">std::fmt</span>;

<span class="kw">use</span> <span class="ident">anyhow::Result</span>;
<span class="kw">use</span> <span class="ident">enumset::EnumSet</span>;
<span class="kw">use</span> <span class="ident">serde</span>::{<span class="ident">Deserialize</span>, <span class="ident">Serialize</span>};

<span class="kw">use</span> <span class="ident">abstutil</span>::{<span class="ident">deserialize_usize</span>, <span class="ident">serialize_usize</span>, <span class="ident">Tags</span>};
<span class="kw">use</span> <span class="ident">geom</span>::{<span class="ident">Distance</span>, <span class="ident">PolyLine</span>, <span class="ident">Polygon</span>, <span class="ident">Speed</span>};
<span class="kw">use</span> <span class="ident">raw_map::Direction</span>;

<span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::raw</span>::{<span class="ident">OriginalRoad</span>, <span class="ident">RestrictionType</span>};
<span class="kw">use</span> <span class="kw">crate</span>::{
    <span class="ident">osm</span>, <span class="ident">AccessRestrictions</span>, <span class="ident">CommonEndpoint</span>, <span class="ident">DrivingSide</span>, <span class="ident">IntersectionID</span>, <span class="ident">Lane</span>, <span class="ident">LaneID</span>, <span class="ident">LaneSpec</span>,
    <span class="ident">LaneType</span>, <span class="ident">Map</span>, <span class="ident">PathConstraints</span>, <span class="ident">TransitStopID</span>, <span class="ident">Zone</span>,
};

<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">Debug</span>, <span class="ident">Eq</span>, <span class="ident">Hash</span>, <span class="ident">PartialEq</span>, <span class="ident">PartialOrd</span>, <span class="ident">Ord</span>, <span class="ident">Serialize</span>, <span class="ident">Deserialize</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">RoadID</span>(
    <span class="attribute">#[<span class="ident">serde</span>(
        <span class="ident">serialize_with</span> <span class="op">=</span> <span class="string">&quot;serialize_usize&quot;</span>,
        <span class="ident">deserialize_with</span> <span class="op">=</span> <span class="string">&quot;deserialize_usize&quot;</span>
    )]</span>
    <span class="kw">pub</span> <span class="ident">usize</span>,
);

<span class="kw">impl</span> <span class="ident">fmt::Display</span> <span class="kw">for</span> <span class="ident">RoadID</span> {
    <span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&amp;mut</span> <span class="ident">fmt::Formatter</span>) -&gt; <span class="ident">fmt::Result</span> {
        <span class="macro">write!</span>(<span class="ident">f</span>, <span class="string">&quot;Road #{}&quot;</span>, <span class="self">self</span>.<span class="number">0</span>)
    }
}

<span class="kw">impl</span> <span class="ident">RoadID</span> {
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">both_directions</span>(<span class="self">self</span>) -&gt; <span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">DirectedRoadID</span><span class="op">&gt;</span> {
        <span class="macro">vec!</span>[
            <span class="ident">DirectedRoadID</span> {
                <span class="ident">road</span>: <span class="self">self</span>,
                <span class="ident">dir</span>: <span class="ident">Direction::Fwd</span>,
            },
            <span class="ident">DirectedRoadID</span> {
                <span class="ident">road</span>: <span class="self">self</span>,
                <span class="ident">dir</span>: <span class="ident">Direction::Back</span>,
            },
        ]
    }
}

<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">Debug</span>, <span class="ident">Eq</span>, <span class="ident">Hash</span>, <span class="ident">PartialEq</span>, <span class="ident">PartialOrd</span>, <span class="ident">Ord</span>, <span class="ident">Serialize</span>, <span class="ident">Deserialize</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">DirectedRoadID</span> {
    <span class="kw">pub</span> <span class="ident">road</span>: <span class="ident">RoadID</span>,
    <span class="kw">pub</span> <span class="ident">dir</span>: <span class="ident">Direction</span>,
}

<span class="kw">impl</span> <span class="ident">fmt::Display</span> <span class="kw">for</span> <span class="ident">DirectedRoadID</span> {
    <span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&amp;mut</span> <span class="ident">fmt::Formatter</span>) -&gt; <span class="ident">fmt::Result</span> {
        <span class="macro">write!</span>(<span class="ident">f</span>, <span class="string">&quot;DirectedRoadID({}, {})&quot;</span>, <span class="self">self</span>.<span class="ident">road</span>.<span class="number">0</span>, <span class="self">self</span>.<span class="ident">dir</span>,)
    }
}

<span class="kw">impl</span> <span class="ident">DirectedRoadID</span> {
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">src_i</span>(<span class="self">self</span>, <span class="ident">map</span>: <span class="kw-2">&amp;</span><span class="ident">Map</span>) -&gt; <span class="ident">IntersectionID</span> {
        <span class="kw">let</span> <span class="ident">r</span> <span class="op">=</span> <span class="ident">map</span>.<span class="ident">get_r</span>(<span class="self">self</span>.<span class="ident">road</span>);
        <span class="kw">if</span> <span class="self">self</span>.<span class="ident">dir</span> <span class="op">==</span> <span class="ident">Direction::Fwd</span> {
            <span class="ident">r</span>.<span class="ident">src_i</span>
        } <span class="kw">else</span> {
            <span class="ident">r</span>.<span class="ident">dst_i</span>
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">dst_i</span>(<span class="self">self</span>, <span class="ident">map</span>: <span class="kw-2">&amp;</span><span class="ident">Map</span>) -&gt; <span class="ident">IntersectionID</span> {
        <span class="kw">let</span> <span class="ident">r</span> <span class="op">=</span> <span class="ident">map</span>.<span class="ident">get_r</span>(<span class="self">self</span>.<span class="ident">road</span>);
        <span class="kw">if</span> <span class="self">self</span>.<span class="ident">dir</span> <span class="op">==</span> <span class="ident">Direction::Fwd</span> {
            <span class="ident">r</span>.<span class="ident">dst_i</span>
        } <span class="kw">else</span> {
            <span class="ident">r</span>.<span class="ident">src_i</span>
        }
    }

    <span class="doccomment">/// Strict for bikes. If there are bike lanes, not allowed to use other lanes.</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">lanes</span>(<span class="self">self</span>, <span class="ident">constraints</span>: <span class="ident">PathConstraints</span>, <span class="ident">map</span>: <span class="kw-2">&amp;</span><span class="ident">Map</span>) -&gt; <span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">LaneID</span><span class="op">&gt;</span> {
        <span class="kw">let</span> <span class="ident">r</span> <span class="op">=</span> <span class="ident">map</span>.<span class="ident">get_r</span>(<span class="self">self</span>.<span class="ident">road</span>);
        <span class="ident">constraints</span>.<span class="ident">filter_lanes</span>(<span class="ident">r</span>.<span class="ident">children</span>(<span class="self">self</span>.<span class="ident">dir</span>).<span class="ident">iter</span>().<span class="ident">map</span>(<span class="op">|</span>(<span class="ident">l</span>, <span class="kw">_</span>)<span class="op">|</span> <span class="kw-2">*</span><span class="ident">l</span>).<span class="ident">collect</span>(), <span class="ident">map</span>)
    }

    <span class="doccomment">/// Get the only sidewalk or shoulder on this side of the road, and panic otherwise.</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">must_get_sidewalk</span>(<span class="self">self</span>, <span class="ident">map</span>: <span class="kw-2">&amp;</span><span class="ident">Map</span>) -&gt; <span class="ident">LaneID</span> {
        <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">found</span> <span class="op">=</span> <span class="ident">Vec::new</span>();
        <span class="kw">for</span> (<span class="ident">l</span>, <span class="ident">lt</span>) <span class="kw">in</span> <span class="ident">map</span>.<span class="ident">get_r</span>(<span class="self">self</span>.<span class="ident">road</span>).<span class="ident">children</span>(<span class="self">self</span>.<span class="ident">dir</span>) {
            <span class="kw">if</span> <span class="ident">lt</span>.<span class="ident">is_walkable</span>() {
                <span class="ident">found</span>.<span class="ident">push</span>(<span class="ident">l</span>);
            }
        }
        <span class="kw">if</span> <span class="ident">found</span>.<span class="ident">len</span>() <span class="op">!</span><span class="op">=</span> <span class="number">1</span> {
            <span class="macro">panic!</span>(<span class="string">&quot;must_get_sidewalk broken by {}&quot;</span>, <span class="self">self</span>);
        }
        <span class="ident">found</span>[<span class="number">0</span>]
    }

    <span class="doccomment">/// Does this directed road have any lanes of a certain type?</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">has_lanes</span>(<span class="self">self</span>, <span class="ident">lane_type</span>: <span class="ident">LaneType</span>, <span class="ident">map</span>: <span class="kw-2">&amp;</span><span class="ident">Map</span>) -&gt; <span class="ident">bool</span> {
        <span class="kw">for</span> (<span class="kw">_</span>, <span class="ident">lt</span>) <span class="kw">in</span> <span class="ident">map</span>.<span class="ident">get_r</span>(<span class="self">self</span>.<span class="ident">road</span>).<span class="ident">children</span>(<span class="self">self</span>.<span class="ident">dir</span>) {
            <span class="kw">if</span> <span class="ident">lt</span> <span class="op">==</span> <span class="ident">lane_type</span> {
                <span class="kw">return</span> <span class="bool-val">true</span>;
            }
        }
        <span class="bool-val">false</span>
    }
}

<span class="doccomment">/// See https://wiki.openstreetmap.org/wiki/Forward_%26_backward,_left_%26_right.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">Debug</span>, <span class="ident">Eq</span>, <span class="ident">Hash</span>, <span class="ident">PartialEq</span>, <span class="ident">PartialOrd</span>, <span class="ident">Ord</span>, <span class="ident">Serialize</span>, <span class="ident">Deserialize</span>)]</span>
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">SideOfRoad</span> {
    <span class="ident">Right</span>,
    <span class="ident">Left</span>,
}

<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">Debug</span>, <span class="ident">Eq</span>, <span class="ident">Hash</span>, <span class="ident">PartialEq</span>, <span class="ident">PartialOrd</span>, <span class="ident">Ord</span>, <span class="ident">Serialize</span>, <span class="ident">Deserialize</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">RoadSideID</span> {
    <span class="kw">pub</span> <span class="ident">road</span>: <span class="ident">RoadID</span>,
    <span class="kw">pub</span> <span class="ident">side</span>: <span class="ident">SideOfRoad</span>,
}

<span class="kw">impl</span> <span class="ident">RoadSideID</span> {
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_outermost_lane</span>(<span class="self">self</span>, <span class="ident">map</span>: <span class="kw-2">&amp;</span><span class="ident">Map</span>) -&gt; <span class="kw-2">&amp;</span><span class="ident">Lane</span> {
        <span class="kw">let</span> <span class="ident">r</span> <span class="op">=</span> <span class="ident">map</span>.<span class="ident">get_r</span>(<span class="self">self</span>.<span class="ident">road</span>);
        <span class="kw">match</span> <span class="self">self</span>.<span class="ident">side</span> {
            <span class="ident">SideOfRoad::Right</span> =&gt; <span class="ident">r</span>.<span class="ident">lanes</span>.<span class="ident">last</span>().<span class="ident">unwrap</span>(),
            <span class="ident">SideOfRoad::Left</span> =&gt; <span class="kw-2">&amp;</span><span class="ident">r</span>.<span class="ident">lanes</span>[<span class="number">0</span>],
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">other_side</span>(<span class="self">self</span>) -&gt; <span class="ident">RoadSideID</span> {
        <span class="ident">RoadSideID</span> {
            <span class="ident">road</span>: <span class="self">self</span>.<span class="ident">road</span>,
            <span class="ident">side</span>: <span class="kw">if</span> <span class="self">self</span>.<span class="ident">side</span> <span class="op">==</span> <span class="ident">SideOfRoad::Left</span> {
                <span class="ident">SideOfRoad::Right</span>
            } <span class="kw">else</span> {
                <span class="ident">SideOfRoad::Left</span>
            },
        }
    }
}

<span class="doccomment">/// A Road represents a segment between exactly two Intersections. It contains Lanes as children.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Serialize</span>, <span class="ident">Deserialize</span>, <span class="ident">Clone</span>, <span class="ident">Debug</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Road</span> {
    <span class="kw">pub</span> <span class="ident">id</span>: <span class="ident">RoadID</span>,
    <span class="kw">pub</span> <span class="ident">osm_tags</span>: <span class="ident">Tags</span>,
    <span class="doccomment">/// self is &#39;from&#39;</span>
    <span class="kw">pub</span> <span class="ident">turn_restrictions</span>: <span class="ident">Vec</span><span class="op">&lt;</span>(<span class="ident">RestrictionType</span>, <span class="ident">RoadID</span>)<span class="op">&gt;</span>,
    <span class="doccomment">/// self is &#39;from&#39;. (via, to). Only BanTurns.</span>
    <span class="kw">pub</span> <span class="ident">complicated_turn_restrictions</span>: <span class="ident">Vec</span><span class="op">&lt;</span>(<span class="ident">RoadID</span>, <span class="ident">RoadID</span>)<span class="op">&gt;</span>,
    <span class="kw">pub</span> <span class="ident">orig_id</span>: <span class="ident">OriginalRoad</span>,
    <span class="kw">pub</span> <span class="ident">speed_limit</span>: <span class="ident">Speed</span>,
    <span class="kw">pub</span> <span class="ident">access_restrictions</span>: <span class="ident">AccessRestrictions</span>,
    <span class="kw">pub</span> <span class="ident">zorder</span>: <span class="ident">isize</span>,
    <span class="doccomment">/// [-1.0, 1.0] theoretically, but in practice, about [-0.25, 0.25]. 0 is flat,</span>
    <span class="doccomment">/// positive is uphill from src_i -&gt; dst_i, negative is downhill.</span>
    <span class="kw">pub</span> <span class="ident">percent_incline</span>: <span class="ident">f64</span>,

    <span class="doccomment">/// Invariant: A road must contain at least one child. These are ordered from the left side of</span>
    <span class="doccomment">/// the road to the right, with that orientation determined by the direction of `center_pts`.</span>
    <span class="kw">pub</span> <span class="ident">lanes</span>: <span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">Lane</span><span class="op">&gt;</span>,

    <span class="doccomment">/// The physical center of the road, including sidewalks, after trimming to account for the</span>
    <span class="doccomment">/// intersection geometry. The order implies road orientation.</span>
    <span class="kw">pub</span> <span class="ident">center_pts</span>: <span class="ident">PolyLine</span>,
    <span class="doccomment">/// Like center_pts, but before any trimming for intersection geometry. This is preserved so</span>
    <span class="doccomment">/// that when modifying road width, intersection polygons can be calculated correctly.</span>
    <span class="kw">pub</span> <span class="ident">untrimmed_center_pts</span>: <span class="ident">PolyLine</span>,
    <span class="kw">pub</span> <span class="ident">src_i</span>: <span class="ident">IntersectionID</span>,
    <span class="kw">pub</span> <span class="ident">dst_i</span>: <span class="ident">IntersectionID</span>,
    <span class="doccomment">/// Is there a tagged crosswalk near each end of the road?</span>
    <span class="kw">pub</span> <span class="ident">crosswalk_forward</span>: <span class="ident">bool</span>,
    <span class="kw">pub</span> <span class="ident">crosswalk_backward</span>: <span class="ident">bool</span>,

    <span class="doccomment">/// Meaningless order</span>
    <span class="kw">pub</span> <span class="ident">transit_stops</span>: <span class="ident">BTreeSet</span><span class="op">&lt;</span><span class="ident">TransitStopID</span><span class="op">&gt;</span>,
}

<span class="kw">impl</span> <span class="ident">Road</span> {
    <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">lane_specs</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">LaneSpec</span><span class="op">&gt;</span> {
        <span class="self">self</span>.<span class="ident">lanes</span>
            .<span class="ident">iter</span>()
            .<span class="ident">map</span>(<span class="op">|</span><span class="ident">l</span><span class="op">|</span> <span class="ident">LaneSpec</span> {
                <span class="ident">lt</span>: <span class="ident">l</span>.<span class="ident">lane_type</span>,
                <span class="ident">dir</span>: <span class="ident">l</span>.<span class="ident">dir</span>,
                <span class="ident">width</span>: <span class="ident">l</span>.<span class="ident">width</span>,
            })
            .<span class="ident">collect</span>()
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">shift_from_left_side</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">width_from_left_side</span>: <span class="ident">Distance</span>) -&gt; <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">PolyLine</span><span class="op">&gt;</span> {
        <span class="self">self</span>.<span class="ident">center_pts</span>
            .<span class="ident">shift_from_center</span>(<span class="self">self</span>.<span class="ident">get_width</span>(), <span class="ident">width_from_left_side</span>)
    }

    <span class="doccomment">/// lane must belong to this road. Offset 0 is the centermost lane on each side of a road, then</span>
    <span class="doccomment">/// it counts up from there. Note this is a different offset than `offset`!</span>
    <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">dir_and_offset</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">lane</span>: <span class="ident">LaneID</span>) -&gt; (<span class="ident">Direction</span>, <span class="ident">usize</span>) {
        <span class="kw">for</span> <span class="ident">dir</span> <span class="kw">in</span> [<span class="ident">Direction::Fwd</span>, <span class="ident">Direction::Back</span>] {
            <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">idx</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">children</span>(<span class="ident">dir</span>).<span class="ident">iter</span>().<span class="ident">position</span>(<span class="op">|</span><span class="ident">pair</span><span class="op">|</span> <span class="ident">pair</span>.<span class="number">0</span> <span class="op">==</span> <span class="ident">lane</span>) {
                <span class="kw">return</span> (<span class="ident">dir</span>, <span class="ident">idx</span>);
            }
        }
        <span class="macro">panic!</span>(<span class="string">&quot;{} doesn&#39;t contain {}&quot;</span>, <span class="self">self</span>.<span class="ident">id</span>, <span class="ident">lane</span>);
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">parking_to_driving</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">parking</span>: <span class="ident">LaneID</span>) -&gt; <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">LaneID</span><span class="op">&gt;</span> {
        <span class="self">self</span>.<span class="ident">find_closest_lane</span>(<span class="ident">parking</span>, <span class="op">|</span><span class="ident">l</span><span class="op">|</span> <span class="ident">l</span>.<span class="ident">is_driving</span>())
    }

    <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">speed_limit_from_osm</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">Speed</span> {
        <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">limit</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">osm_tags</span>.<span class="ident">get</span>(<span class="ident">osm::MAXSPEED</span>) {
            <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">kmph</span>) <span class="op">=</span> <span class="ident">limit</span>.<span class="ident">parse</span>::<span class="op">&lt;</span><span class="ident">f64</span><span class="op">&gt;</span>() {
                <span class="kw">if</span> <span class="ident">kmph</span> <span class="op">==</span> <span class="number">0.0</span> {
                    <span class="macro">warn!</span>(<span class="string">&quot;{} has a speed limit of 0&quot;</span>, <span class="self">self</span>.<span class="ident">orig_id</span>.<span class="ident">osm_way_id</span>);
                    <span class="kw">return</span> <span class="ident">Speed::miles_per_hour</span>(<span class="number">1.0</span>);
                }
                <span class="kw">return</span> <span class="ident">Speed::km_per_hour</span>(<span class="ident">kmph</span>);
            }

            <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">mph</span>) <span class="op">=</span> <span class="ident">limit</span>
                .<span class="ident">strip_suffix</span>(<span class="string">&quot; mph&quot;</span>)
                .<span class="ident">and_then</span>(<span class="op">|</span><span class="ident">x</span><span class="op">|</span> <span class="ident">x</span>.<span class="ident">parse</span>::<span class="op">&lt;</span><span class="ident">f64</span><span class="op">&gt;</span>().<span class="ident">ok</span>())
            {
                <span class="kw">return</span> <span class="ident">Speed::miles_per_hour</span>(<span class="ident">mph</span>);
            }

            <span class="comment">// TODO Handle implicits, like PL:zone30</span>
        }

        <span class="comment">// These&#39;re half reasonable guesses. Better to explicitly tag in OSM.</span>
        <span class="kw">if</span> <span class="self">self</span>
            .<span class="ident">osm_tags</span>
            .<span class="ident">is_any</span>(<span class="ident">osm::HIGHWAY</span>, <span class="macro">vec!</span>[<span class="string">&quot;primary&quot;</span>, <span class="string">&quot;secondary&quot;</span>, <span class="string">&quot;motorway_link&quot;</span>])
        {
            <span class="kw">return</span> <span class="ident">Speed::miles_per_hour</span>(<span class="number">40.0</span>);
        }
        <span class="kw">if</span> <span class="self">self</span>.<span class="ident">osm_tags</span>.<span class="ident">is</span>(<span class="ident">osm::HIGHWAY</span>, <span class="string">&quot;living_street&quot;</span>) {
            <span class="comment">// about 12mph</span>
            <span class="kw">return</span> <span class="ident">Speed::km_per_hour</span>(<span class="number">20.0</span>);
        }
        <span class="kw">if</span> <span class="self">self</span>.<span class="ident">is_service</span>() {
            <span class="kw">return</span> <span class="ident">Speed::miles_per_hour</span>(<span class="number">10.0</span>);
        }
        <span class="ident">Speed::miles_per_hour</span>(<span class="number">20.0</span>)
    }

    <span class="doccomment">/// Includes off-side</span>
    <span class="comment">// TODO Specialize a variant for PathConstraints.can_use. Only one caller needs something</span>
    <span class="comment">// fancier.</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">find_closest_lane</span><span class="op">&lt;</span><span class="ident">F</span>: <span class="ident">Fn</span>(<span class="kw-2">&amp;</span><span class="ident">Lane</span>) -&gt; <span class="ident">bool</span><span class="op">&gt;</span>(
        <span class="kw-2">&amp;</span><span class="self">self</span>,
        <span class="ident">from</span>: <span class="ident">LaneID</span>,
        <span class="ident">filter</span>: <span class="ident">F</span>,
    ) -&gt; <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">LaneID</span><span class="op">&gt;</span> {
        <span class="kw">let</span> <span class="ident">our_idx</span> <span class="op">=</span> <span class="ident">from</span>.<span class="ident">offset</span> <span class="kw">as</span> <span class="ident">isize</span>;
        <span class="self">self</span>.<span class="ident">lanes</span>
            .<span class="ident">iter</span>()
            .<span class="ident">enumerate</span>()
            .<span class="ident">filter_map</span>(<span class="op">|</span>(<span class="ident">idx</span>, <span class="ident">l</span>)<span class="op">|</span> {
                <span class="kw">if</span> (<span class="ident">idx</span> <span class="kw">as</span> <span class="ident">isize</span>) <span class="op">!</span><span class="op">=</span> <span class="ident">our_idx</span> <span class="op">&amp;&amp;</span> <span class="ident">filter</span>(<span class="ident">l</span>) {
                    <span class="prelude-val">Some</span>((<span class="ident">idx</span>, <span class="ident">l</span>.<span class="ident">id</span>))
                } <span class="kw">else</span> {
                    <span class="prelude-val">None</span>
                }
            })
            .<span class="ident">min_by_key</span>(<span class="op">|</span>(<span class="ident">idx</span>, <span class="kw">_</span>)<span class="op">|</span> (<span class="ident">our_idx</span> <span class="op">-</span> (<span class="kw-2">*</span><span class="ident">idx</span> <span class="kw">as</span> <span class="ident">isize</span>)).<span class="ident">abs</span>())
            .<span class="ident">map</span>(<span class="op">|</span>(<span class="kw">_</span>, <span class="ident">l</span>)<span class="op">|</span> <span class="ident">l</span>)
    }

    <span class="doccomment">/// This is the FIRST yellow line where the direction of the road changes. If multiple direction</span>
    <span class="doccomment">/// changes happen, the result is kind of arbitrary.</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_dir_change_pl</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">map</span>: <span class="kw-2">&amp;</span><span class="ident">Map</span>) -&gt; <span class="ident">PolyLine</span> {
        <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">found</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="kw-2">&amp;</span><span class="ident">Lane</span><span class="op">&gt;</span> <span class="op">=</span> <span class="prelude-val">None</span>;
        <span class="kw">for</span> <span class="ident">pair</span> <span class="kw">in</span> <span class="self">self</span>.<span class="ident">lanes</span>.<span class="ident">windows</span>(<span class="number">2</span>) {
            <span class="kw">if</span> <span class="ident">pair</span>[<span class="number">0</span>].<span class="ident">dir</span> <span class="op">!</span><span class="op">=</span> <span class="ident">pair</span>[<span class="number">1</span>].<span class="ident">dir</span> {
                <span class="ident">found</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="kw-2">&amp;</span><span class="ident">pair</span>[<span class="number">0</span>]);
                <span class="kw">break</span>;
            }
        }
        <span class="kw">let</span> <span class="ident">lane</span> <span class="op">=</span> <span class="ident">found</span>.<span class="ident">unwrap_or</span>(<span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">lanes</span>[<span class="number">0</span>]);
        <span class="comment">// There&#39;s a weird edge case with single lane light rail on left-handed maps...</span>
        <span class="kw">let</span> <span class="ident">shifted</span> <span class="op">=</span> <span class="kw">if</span> <span class="ident">map</span>.<span class="ident">get_config</span>().<span class="ident">driving_side</span> <span class="op">==</span> <span class="ident">DrivingSide::Right</span> <span class="op">|</span><span class="op">|</span> <span class="ident">found</span>.<span class="ident">is_none</span>() {
            <span class="ident">lane</span>.<span class="ident">lane_center_pts</span>.<span class="ident">must_shift_left</span>(<span class="ident">lane</span>.<span class="ident">width</span> <span class="op">/</span> <span class="number">2.0</span>)
        } <span class="kw">else</span> {
            <span class="ident">lane</span>.<span class="ident">lane_center_pts</span>.<span class="ident">must_shift_right</span>(<span class="ident">lane</span>.<span class="ident">width</span> <span class="op">/</span> <span class="number">2.0</span>)
        };
        <span class="kw">if</span> <span class="ident">lane</span>.<span class="ident">dir</span> <span class="op">==</span> <span class="ident">Direction::Fwd</span> {
            <span class="ident">shifted</span>
        } <span class="kw">else</span> {
            <span class="ident">shifted</span>.<span class="ident">reversed</span>()
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_half_width</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">Distance</span> {
        <span class="self">self</span>.<span class="ident">get_width</span>() <span class="op">/</span> <span class="number">2.0</span>
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_width</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">Distance</span> {
        <span class="self">self</span>.<span class="ident">lanes</span>.<span class="ident">iter</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">l</span><span class="op">|</span> <span class="ident">l</span>.<span class="ident">width</span>).<span class="ident">sum</span>::<span class="op">&lt;</span><span class="ident">Distance</span><span class="op">&gt;</span>()
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_thick_polygon</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">Polygon</span> {
        <span class="self">self</span>.<span class="ident">center_pts</span>.<span class="ident">make_polygons</span>(<span class="self">self</span>.<span class="ident">get_width</span>())
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">length</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">Distance</span> {
        <span class="self">self</span>.<span class="ident">center_pts</span>.<span class="ident">length</span>()
    }

    <span class="doccomment">/// Creates the thick polygon representing one half of the road. For roads with multipe</span>
    <span class="doccomment">/// direction changes (like a two-way cycletrack adjacent to a regular two-way road), the</span>
    <span class="doccomment">/// results are probably weird.</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_half_polygon</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">dir</span>: <span class="ident">Direction</span>, <span class="ident">map</span>: <span class="kw-2">&amp;</span><span class="ident">Map</span>) -&gt; <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">Polygon</span><span class="op">&gt;</span> {
        <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">width_fwd</span> <span class="op">=</span> <span class="ident">Distance::ZERO</span>;
        <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">width_back</span> <span class="op">=</span> <span class="ident">Distance::ZERO</span>;
        <span class="kw">for</span> <span class="ident">l</span> <span class="kw">in</span> <span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">lanes</span> {
            <span class="kw">if</span> <span class="ident">l</span>.<span class="ident">dir</span> <span class="op">==</span> <span class="ident">Direction::Fwd</span> {
                <span class="ident">width_fwd</span> <span class="op">+</span><span class="op">=</span> <span class="ident">l</span>.<span class="ident">width</span>;
            } <span class="kw">else</span> {
                <span class="ident">width_back</span> <span class="op">+</span><span class="op">=</span> <span class="ident">l</span>.<span class="ident">width</span>;
            }
        }
        <span class="kw">let</span> <span class="ident">center</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">get_dir_change_pl</span>(<span class="ident">map</span>);

        <span class="comment">// TODO Test on UK maps...</span>
        <span class="kw">let</span> <span class="ident">shift</span> <span class="op">=</span> <span class="kw">if</span> <span class="ident">map</span>.<span class="ident">get_config</span>().<span class="ident">driving_side</span> <span class="op">==</span> <span class="ident">DrivingSide::Right</span> {
            <span class="number">1.0</span>
        } <span class="kw">else</span> {
            <span class="op">-</span><span class="number">1.0</span>
        };
        <span class="kw">if</span> <span class="ident">dir</span> <span class="op">==</span> <span class="ident">Direction::Fwd</span> {
            <span class="prelude-val">Ok</span>(<span class="ident">center</span>
                .<span class="ident">shift_right</span>(<span class="ident">shift</span> <span class="op">*</span> <span class="ident">width_fwd</span> <span class="op">/</span> <span class="number">2.0</span>)<span class="question-mark">?</span>
                .<span class="ident">make_polygons</span>(<span class="ident">width_fwd</span>))
        } <span class="kw">else</span> {
            <span class="prelude-val">Ok</span>(<span class="ident">center</span>
                .<span class="ident">shift_left</span>(<span class="ident">shift</span> <span class="op">*</span> <span class="ident">width_back</span> <span class="op">/</span> <span class="number">2.0</span>)<span class="question-mark">?</span>
                .<span class="ident">make_polygons</span>(<span class="ident">width_back</span>))
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_name</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">lang</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="kw-2">&amp;</span><span class="ident">String</span><span class="op">&gt;</span>) -&gt; <span class="ident">String</span> {
        <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">lang</span>) <span class="op">=</span> <span class="ident">lang</span> {
            <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">name</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">osm_tags</span>.<span class="ident">get</span>(<span class="kw-2">&amp;</span><span class="macro">format!</span>(<span class="string">&quot;name:{}&quot;</span>, <span class="ident">lang</span>)) {
                <span class="kw">return</span> <span class="ident">name</span>.<span class="ident">to_string</span>();
            }
        }

        <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">name</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">osm_tags</span>.<span class="ident">get</span>(<span class="ident">osm::NAME</span>) {
            <span class="kw">if</span> <span class="ident">name</span>.<span class="ident">is_empty</span>() {
                <span class="kw">return</span> <span class="string">&quot;???&quot;</span>.<span class="ident">to_string</span>();
            } <span class="kw">else</span> {
                <span class="kw">return</span> <span class="ident">name</span>.<span class="ident">to_string</span>();
            }
        }
        <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">name</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">osm_tags</span>.<span class="ident">get</span>(<span class="string">&quot;ref&quot;</span>) {
            <span class="kw">return</span> <span class="ident">name</span>.<span class="ident">to_string</span>();
        }
        <span class="kw">if</span> <span class="self">self</span>
            .<span class="ident">osm_tags</span>
            .<span class="ident">get</span>(<span class="ident">osm::HIGHWAY</span>)
            .<span class="ident">map</span>(<span class="op">|</span><span class="ident">hwy</span><span class="op">|</span> <span class="ident">hwy</span>.<span class="ident">ends_with</span>(<span class="string">&quot;_link&quot;</span>))
            .<span class="ident">unwrap_or</span>(<span class="bool-val">false</span>)
        {
            <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">name</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">osm_tags</span>.<span class="ident">get</span>(<span class="string">&quot;destination:street&quot;</span>) {
                <span class="kw">return</span> <span class="macro">format!</span>(<span class="string">&quot;Exit for {}&quot;</span>, <span class="ident">name</span>);
            }
            <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">name</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">osm_tags</span>.<span class="ident">get</span>(<span class="string">&quot;destination:ref&quot;</span>) {
                <span class="kw">return</span> <span class="macro">format!</span>(<span class="string">&quot;Exit for {}&quot;</span>, <span class="ident">name</span>);
            }
            <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">name</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">osm_tags</span>.<span class="ident">get</span>(<span class="string">&quot;destination&quot;</span>) {
                <span class="kw">return</span> <span class="macro">format!</span>(<span class="string">&quot;Exit for {}&quot;</span>, <span class="ident">name</span>);
            }
            <span class="comment">// Sometimes &#39;directions&#39; is filled out, but incorrectly...</span>
        }
        <span class="string">&quot;???&quot;</span>.<span class="ident">to_string</span>()
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_rank</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">osm::RoadRank</span> {
        <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">x</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">osm_tags</span>.<span class="ident">get</span>(<span class="ident">osm::HIGHWAY</span>) {
            <span class="kw">if</span> <span class="ident">x</span> <span class="op">==</span> <span class="string">&quot;construction&quot;</span> {
                <span class="comment">// What exactly is under construction?</span>
                <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">x</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">osm_tags</span>.<span class="ident">get</span>(<span class="string">&quot;construction&quot;</span>) {
                    <span class="ident">osm::RoadRank::from_highway</span>(<span class="ident">x</span>)
                } <span class="kw">else</span> {
                    <span class="ident">osm::RoadRank::Local</span>
                }
            } <span class="kw">else</span> {
                <span class="ident">osm::RoadRank::from_highway</span>(<span class="ident">x</span>)
            }
        } <span class="kw">else</span> {
            <span class="ident">osm::RoadRank::Local</span>
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_detailed_rank</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">usize</span> {
        <span class="self">self</span>.<span class="ident">osm_tags</span>
            .<span class="ident">get</span>(<span class="ident">osm::HIGHWAY</span>)
            .<span class="ident">map</span>(<span class="op">|</span><span class="ident">hwy</span><span class="op">|</span> <span class="ident">osm::RoadRank::detailed_from_highway</span>(<span class="ident">hwy</span>))
            .<span class="ident">unwrap_or</span>(<span class="number">0</span>)
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_light_rail</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">bool</span> {
        <span class="self">self</span>.<span class="ident">lanes</span>.<span class="ident">len</span>() <span class="op">==</span> <span class="number">1</span> <span class="op">&amp;&amp;</span> <span class="self">self</span>.<span class="ident">lanes</span>[<span class="number">0</span>].<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::LightRail</span>
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_footway</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">bool</span> {
        <span class="self">self</span>.<span class="ident">lanes</span>.<span class="ident">len</span>() <span class="op">==</span> <span class="number">1</span> <span class="op">&amp;&amp;</span> <span class="self">self</span>.<span class="ident">lanes</span>[<span class="number">0</span>].<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::Sidewalk</span>
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_service</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">bool</span> {
        <span class="self">self</span>.<span class="ident">osm_tags</span>.<span class="ident">is</span>(<span class="ident">osm::HIGHWAY</span>, <span class="string">&quot;service&quot;</span>)
    }

    <span class="comment">// TODO Shared walking/biking roads get classified as a cycleway for now</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_cycleway</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">bool</span> {
        <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">bike</span> <span class="op">=</span> <span class="bool-val">false</span>;
        <span class="kw">for</span> <span class="ident">lane</span> <span class="kw">in</span> <span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">lanes</span> {
            <span class="kw">if</span> <span class="ident">lane</span>.<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::Biking</span> {
                <span class="ident">bike</span> <span class="op">=</span> <span class="bool-val">true</span>;
            } <span class="kw">else</span> <span class="kw">if</span> <span class="op">!</span><span class="ident">lane</span>.<span class="ident">is_walkable</span>() {
                <span class="kw">return</span> <span class="bool-val">false</span>;
            }
        }
        <span class="ident">bike</span>
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_driveable</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">bool</span> {
        <span class="self">self</span>.<span class="ident">lanes</span>.<span class="ident">iter</span>().<span class="ident">any</span>(<span class="op">|</span><span class="ident">l</span><span class="op">|</span> <span class="ident">l</span>.<span class="ident">is_driving</span>())
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">common_endpoint</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&amp;</span><span class="ident">Road</span>) -&gt; <span class="ident">CommonEndpoint</span> {
        <span class="ident">CommonEndpoint::new</span>((<span class="self">self</span>.<span class="ident">src_i</span>, <span class="self">self</span>.<span class="ident">dst_i</span>), (<span class="ident">other</span>.<span class="ident">src_i</span>, <span class="ident">other</span>.<span class="ident">dst_i</span>))
    }

    <span class="doccomment">/// Returns the other intersection of this road, panicking if this road doesn&#39;t connect to the</span>
    <span class="doccomment">/// input</span>
    <span class="doccomment">/// TODO This should use CommonEndpoint</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">other_endpt</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">i</span>: <span class="ident">IntersectionID</span>) -&gt; <span class="ident">IntersectionID</span> {
        <span class="kw">if</span> <span class="self">self</span>.<span class="ident">src_i</span> <span class="op">==</span> <span class="ident">i</span> {
            <span class="self">self</span>.<span class="ident">dst_i</span>
        } <span class="kw">else</span> <span class="kw">if</span> <span class="self">self</span>.<span class="ident">dst_i</span> <span class="op">==</span> <span class="ident">i</span> {
            <span class="self">self</span>.<span class="ident">src_i</span>
        } <span class="kw">else</span> {
            <span class="macro">panic!</span>(<span class="string">&quot;{} doesn&#39;t touch {}&quot;</span>, <span class="self">self</span>.<span class="ident">id</span>, <span class="ident">i</span>);
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_private</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">bool</span> {
        <span class="self">self</span>.<span class="ident">access_restrictions</span> <span class="op">!</span><span class="op">=</span> <span class="ident">AccessRestrictions::new</span>() <span class="op">&amp;&amp;</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">is_light_rail</span>()
    }

    <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">access_restrictions_from_osm</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">AccessRestrictions</span> {
        <span class="kw">let</span> <span class="ident">allow_through_traffic</span> <span class="op">=</span> <span class="kw">if</span> <span class="self">self</span>.<span class="ident">osm_tags</span>.<span class="ident">is</span>(<span class="string">&quot;access&quot;</span>, <span class="string">&quot;private&quot;</span>) {
            <span class="ident">EnumSet::new</span>()
        } <span class="kw">else</span> <span class="kw">if</span> <span class="self">self</span>.<span class="ident">osm_tags</span>.<span class="ident">is</span>(<span class="ident">osm::HIGHWAY</span>, <span class="string">&quot;living_street&quot;</span>) {
            <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">allow</span> <span class="op">=</span> <span class="ident">PathConstraints::Pedestrian</span> <span class="op">|</span> <span class="ident">PathConstraints::Bike</span>;
            <span class="kw">if</span> <span class="self">self</span>.<span class="ident">osm_tags</span>.<span class="ident">is</span>(<span class="string">&quot;psv&quot;</span>, <span class="string">&quot;yes&quot;</span>) <span class="op">|</span><span class="op">|</span> <span class="self">self</span>.<span class="ident">osm_tags</span>.<span class="ident">is</span>(<span class="string">&quot;bus&quot;</span>, <span class="string">&quot;yes&quot;</span>) {
                <span class="ident">allow</span> <span class="op">|</span><span class="op">=</span> <span class="ident">PathConstraints::Bus</span>;
            }
            <span class="ident">allow</span>
        } <span class="kw">else</span> {
            <span class="ident">EnumSet::all</span>()
        };
        <span class="ident">AccessRestrictions</span> {
            <span class="ident">allow_through_traffic</span>,
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_zone</span><span class="op">&lt;</span><span class="lifetime">&#39;a</span><span class="op">&gt;</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">map</span>: <span class="kw-2">&amp;</span><span class="lifetime">&#39;a</span> <span class="ident">Map</span>) -&gt; <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="kw-2">&amp;</span><span class="lifetime">&#39;a</span> <span class="ident">Zone</span><span class="op">&gt;</span> {
        <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">is_private</span>() {
            <span class="kw">return</span> <span class="prelude-val">None</span>;
        }
        <span class="comment">// Insist on it existing</span>
        <span class="prelude-val">Some</span>(
            <span class="ident">map</span>.<span class="ident">zones</span>
                .<span class="ident">iter</span>()
                .<span class="ident">find</span>(<span class="op">|</span><span class="ident">z</span><span class="op">|</span> <span class="ident">z</span>.<span class="ident">members</span>.<span class="ident">contains</span>(<span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">id</span>))
                .<span class="ident">unwrap</span>(),
        )
    }

    <span class="doccomment">/// Many roads wind up with almost no length, due to their representation in OpenStreetMap. In</span>
    <span class="doccomment">/// reality, these segments are likely located within the interior of an intersection. This</span>
    <span class="doccomment">/// method uses a hardcoded threshold to detect these cases.</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_extremely_short</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">bool</span> {
        <span class="self">self</span>.<span class="ident">length</span>() <span class="op">&lt;</span> <span class="ident">Distance::meters</span>(<span class="number">2.0</span>)
    }

    <span class="doccomment">/// Get the DirectedRoadID pointing to the intersection. Panics if the intersection isn&#39;t an</span>
    <span class="doccomment">/// endpoint.</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">directed_id_from</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">i</span>: <span class="ident">IntersectionID</span>) -&gt; <span class="ident">DirectedRoadID</span> {
        <span class="ident">DirectedRoadID</span> {
            <span class="ident">road</span>: <span class="self">self</span>.<span class="ident">id</span>,
            <span class="ident">dir</span>: <span class="kw">if</span> <span class="self">self</span>.<span class="ident">src_i</span> <span class="op">==</span> <span class="ident">i</span> {
                <span class="ident">Direction::Fwd</span>
            } <span class="kw">else</span> <span class="kw">if</span> <span class="self">self</span>.<span class="ident">dst_i</span> <span class="op">==</span> <span class="ident">i</span> {
                <span class="ident">Direction::Back</span>
            } <span class="kw">else</span> {
                <span class="macro">panic!</span>(<span class="string">&quot;{} doesn&#39;t point to {}&quot;</span>, <span class="self">self</span>.<span class="ident">id</span>, <span class="ident">i</span>);
            },
        }
    }

    <span class="doccomment">/// Get the DirectedRoadID pointing from the intersection. Panics if the intersection isn&#39;t an</span>
    <span class="doccomment">/// endpoint.</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">directed_id_to</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">i</span>: <span class="ident">IntersectionID</span>) -&gt; <span class="ident">DirectedRoadID</span> {
        <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">id</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">directed_id_from</span>(<span class="ident">i</span>);
        <span class="ident">id</span>.<span class="ident">dir</span> <span class="op">=</span> <span class="ident">id</span>.<span class="ident">dir</span>.<span class="ident">opposite</span>();
        <span class="ident">id</span>
    }

    <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">recreate_lanes</span>(<span class="kw-2">&amp;mut</span> <span class="self">self</span>, <span class="ident">lane_specs_ltr</span>: <span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">LaneSpec</span><span class="op">&gt;</span>) {
        <span class="self">self</span>.<span class="ident">lanes</span>.<span class="ident">clear</span>();

        <span class="kw">let</span> <span class="ident">total_width</span> <span class="op">=</span> <span class="ident">lane_specs_ltr</span>.<span class="ident">iter</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">x</span><span class="op">|</span> <span class="ident">x</span>.<span class="ident">width</span>).<span class="ident">sum</span>();

        <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">width_so_far</span> <span class="op">=</span> <span class="ident">Distance::ZERO</span>;
        <span class="kw">for</span> <span class="ident">lane</span> <span class="kw">in</span> <span class="ident">lane_specs_ltr</span> {
            <span class="kw">let</span> <span class="ident">id</span> <span class="op">=</span> <span class="ident">LaneID</span> {
                <span class="ident">road</span>: <span class="self">self</span>.<span class="ident">id</span>,
                <span class="ident">offset</span>: <span class="self">self</span>.<span class="ident">lanes</span>.<span class="ident">len</span>(),
            };

            <span class="kw">let</span> (<span class="ident">src_i</span>, <span class="ident">dst_i</span>) <span class="op">=</span> <span class="kw">if</span> <span class="ident">lane</span>.<span class="ident">dir</span> <span class="op">==</span> <span class="ident">Direction::Fwd</span> {
                (<span class="self">self</span>.<span class="ident">src_i</span>, <span class="self">self</span>.<span class="ident">dst_i</span>)
            } <span class="kw">else</span> {
                (<span class="self">self</span>.<span class="ident">dst_i</span>, <span class="self">self</span>.<span class="ident">src_i</span>)
            };

            <span class="ident">width_so_far</span> <span class="op">+</span><span class="op">=</span> <span class="ident">lane</span>.<span class="ident">width</span> <span class="op">/</span> <span class="number">2.0</span>;
            <span class="kw">let</span> <span class="ident">pl</span> <span class="op">=</span> <span class="self">self</span>
                .<span class="ident">center_pts</span>
                .<span class="ident">shift_from_center</span>(<span class="ident">total_width</span>, <span class="ident">width_so_far</span>)
                .<span class="ident">unwrap_or_else</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> <span class="self">self</span>.<span class="ident">center_pts</span>.<span class="ident">clone</span>());
            <span class="ident">width_so_far</span> <span class="op">+</span><span class="op">=</span> <span class="ident">lane</span>.<span class="ident">width</span> <span class="op">/</span> <span class="number">2.0</span>;

            <span class="kw">let</span> <span class="ident">lane_center_pts</span> <span class="op">=</span> <span class="kw">if</span> <span class="ident">lane</span>.<span class="ident">dir</span> <span class="op">==</span> <span class="ident">Direction::Fwd</span> {
                <span class="ident">pl</span>
            } <span class="kw">else</span> {
                <span class="ident">pl</span>.<span class="ident">reversed</span>()
            };

            <span class="self">self</span>.<span class="ident">lanes</span>.<span class="ident">push</span>(<span class="ident">Lane</span> {
                <span class="ident">id</span>,
                <span class="ident">lane_center_pts</span>,
                <span class="ident">width</span>: <span class="ident">lane</span>.<span class="ident">width</span>,
                <span class="ident">src_i</span>,
                <span class="ident">dst_i</span>,
                <span class="ident">lane_type</span>: <span class="ident">lane</span>.<span class="ident">lt</span>,
                <span class="ident">dir</span>: <span class="ident">lane</span>.<span class="ident">dir</span>,
                <span class="ident">driving_blackhole</span>: <span class="bool-val">false</span>,
                <span class="ident">biking_blackhole</span>: <span class="bool-val">false</span>,
            });
        }
    }

    <span class="doccomment">/// Returns all lanes located between l1 and l2, exclusive.</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_lanes_between</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">l1</span>: <span class="ident">LaneID</span>, <span class="ident">l2</span>: <span class="ident">LaneID</span>) -&gt; <span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">LaneID</span><span class="op">&gt;</span> {
        <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">results</span> <span class="op">=</span> <span class="ident">Vec::new</span>();
        <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">found_start</span> <span class="op">=</span> <span class="bool-val">false</span>;
        <span class="kw">for</span> <span class="ident">l</span> <span class="kw">in</span> <span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">lanes</span> {
            <span class="kw">if</span> <span class="ident">found_start</span> {
                <span class="kw">if</span> <span class="ident">l</span>.<span class="ident">id</span> <span class="op">==</span> <span class="ident">l1</span> <span class="op">|</span><span class="op">|</span> <span class="ident">l</span>.<span class="ident">id</span> <span class="op">==</span> <span class="ident">l2</span> {
                    <span class="kw">return</span> <span class="ident">results</span>;
                }
                <span class="ident">results</span>.<span class="ident">push</span>(<span class="ident">l</span>.<span class="ident">id</span>);
            } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">l</span>.<span class="ident">id</span> <span class="op">==</span> <span class="ident">l1</span> <span class="op">|</span><span class="op">|</span> <span class="ident">l</span>.<span class="ident">id</span> <span class="op">==</span> <span class="ident">l2</span> {
                <span class="ident">found_start</span> <span class="op">=</span> <span class="bool-val">true</span>;
            }
        }
        <span class="macro">panic!</span>(<span class="string">&quot;{} doesn&#39;t contain both {} and {}&quot;</span>, <span class="self">self</span>.<span class="ident">id</span>, <span class="ident">l1</span>, <span class="ident">l2</span>);
    }

    <span class="doccomment">/// A simple classification of if the directed road is stressful or not for cycling. Arterial</span>
    <span class="doccomment">/// roads without a bike lane match this. Why arterial, instead of looking at speed limits?</span>
    <span class="doccomment">/// Even on arterial roads with official speed limits lowered, in practice vehicles still</span>
    <span class="doccomment">/// travel at the speed suggested by the design of the road.</span>
    <span class="comment">// TODO Should elevation matter or not? Flat high-speed roads are still terrifying, but there&#39;s</span>
    <span class="comment">// something about slogging up (or flying down!) a pothole-filled road inches from cars.</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">high_stress_for_bikes</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">map</span>: <span class="kw-2">&amp;</span><span class="ident">Map</span>, <span class="ident">dir</span>: <span class="ident">Direction</span>) -&gt; <span class="ident">bool</span> {
        <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">bike_lanes</span> <span class="op">=</span> <span class="bool-val">false</span>;
        <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">can_use</span> <span class="op">=</span> <span class="bool-val">false</span>;
        <span class="comment">// Can a bike even use it, or is it a highway?</span>
        <span class="kw">for</span> <span class="ident">l</span> <span class="kw">in</span> <span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">lanes</span> {
            <span class="kw">if</span> <span class="ident">l</span>.<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::Biking</span> <span class="op">&amp;&amp;</span> <span class="ident">l</span>.<span class="ident">dir</span> <span class="op">==</span> <span class="ident">dir</span> {
                <span class="ident">bike_lanes</span> <span class="op">=</span> <span class="bool-val">true</span>;
            }
            <span class="kw">if</span> <span class="ident">PathConstraints::Bike</span>.<span class="ident">can_use</span>(<span class="ident">l</span>, <span class="ident">map</span>) {
                <span class="ident">can_use</span> <span class="op">=</span> <span class="bool-val">true</span>;
            }
        }
        <span class="kw">if</span> <span class="op">!</span><span class="ident">can_use</span> <span class="op">|</span><span class="op">|</span> <span class="ident">bike_lanes</span> {
            <span class="kw">return</span> <span class="bool-val">false</span>;
        }
        <span class="self">self</span>.<span class="ident">get_rank</span>() <span class="op">!</span><span class="op">=</span> <span class="ident">osm::RoadRank::Local</span>
    }
}

<span class="comment">// TODO All of this is kind of deprecated? Some callers seem to really need to still handle lanes</span>
<span class="comment">// going outward from the &quot;center&quot; line. Should keep whittling this down, probably. These very much</span>
<span class="comment">// don&#39;t handle multiple direction changes.</span>
<span class="kw">impl</span> <span class="ident">Road</span> {
    <span class="doccomment">/// These are ordered from closest to center lane (left-most when driving on the right) to</span>
    <span class="doccomment">/// farthest (sidewalk)</span>
    <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">children_forwards</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">Vec</span><span class="op">&lt;</span>(<span class="ident">LaneID</span>, <span class="ident">LaneType</span>)<span class="op">&gt;</span> {
        <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">result</span> <span class="op">=</span> <span class="ident">Vec::new</span>();
        <span class="kw">for</span> <span class="ident">l</span> <span class="kw">in</span> <span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">lanes</span> {
            <span class="kw">if</span> <span class="ident">l</span>.<span class="ident">dir</span> <span class="op">==</span> <span class="ident">Direction::Fwd</span> {
                <span class="ident">result</span>.<span class="ident">push</span>((<span class="ident">l</span>.<span class="ident">id</span>, <span class="ident">l</span>.<span class="ident">lane_type</span>));
            }
        }
        <span class="ident">result</span>
    }
    <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">children_backwards</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">Vec</span><span class="op">&lt;</span>(<span class="ident">LaneID</span>, <span class="ident">LaneType</span>)<span class="op">&gt;</span> {
        <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">result</span> <span class="op">=</span> <span class="ident">Vec::new</span>();
        <span class="kw">for</span> <span class="ident">l</span> <span class="kw">in</span> <span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">lanes</span> {
            <span class="kw">if</span> <span class="ident">l</span>.<span class="ident">dir</span> <span class="op">==</span> <span class="ident">Direction::Back</span> {
                <span class="ident">result</span>.<span class="ident">push</span>((<span class="ident">l</span>.<span class="ident">id</span>, <span class="ident">l</span>.<span class="ident">lane_type</span>));
            }
        }
        <span class="ident">result</span>.<span class="ident">reverse</span>();
        <span class="ident">result</span>
    }

    <span class="comment">// TODO Deprecated</span>
    <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">children</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">dir</span>: <span class="ident">Direction</span>) -&gt; <span class="ident">Vec</span><span class="op">&lt;</span>(<span class="ident">LaneID</span>, <span class="ident">LaneType</span>)<span class="op">&gt;</span> {
        <span class="kw">if</span> <span class="ident">dir</span> <span class="op">==</span> <span class="ident">Direction::Fwd</span> {
            <span class="self">self</span>.<span class="ident">children_forwards</span>()
        } <span class="kw">else</span> {
            <span class="self">self</span>.<span class="ident">children_backwards</span>()
        }
    }

    <span class="doccomment">/// Returns lanes from the &quot;center&quot; going out</span>
    <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">incoming_lanes</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">i</span>: <span class="ident">IntersectionID</span>) -&gt; <span class="ident">Vec</span><span class="op">&lt;</span>(<span class="ident">LaneID</span>, <span class="ident">LaneType</span>)<span class="op">&gt;</span> {
        <span class="kw">if</span> <span class="self">self</span>.<span class="ident">src_i</span> <span class="op">==</span> <span class="ident">i</span> {
            <span class="self">self</span>.<span class="ident">children_backwards</span>()
        } <span class="kw">else</span> <span class="kw">if</span> <span class="self">self</span>.<span class="ident">dst_i</span> <span class="op">==</span> <span class="ident">i</span> {
            <span class="self">self</span>.<span class="ident">children_forwards</span>()
        } <span class="kw">else</span> {
            <span class="macro">panic!</span>(<span class="string">&quot;{} doesn&#39;t have an endpoint at {}&quot;</span>, <span class="self">self</span>.<span class="ident">id</span>, <span class="ident">i</span>);
        }
    }
}
</code></pre></div>
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