<!DOCTYPE html><htmllang="en"><head><metacharset="utf-8"><metaname="viewport"content="width=device-width, initial-scale=1.0"><metaname="generator"content="rustdoc"><metaname="description"content="API documentation for the Rust `get_possible_policies` fn in crate `map_model`."><metaname="keywords"content="rust, rustlang, rust-lang, get_possible_policies"><title>map_model::make::traffic_signals::get_possible_policies - Rust</title><linkrel="stylesheet"type="text/css"href="../../../normalize.css"><linkrel="stylesheet"type="text/css"href="../../../rustdoc.css"id="mainThemeStyle"><linkrel="stylesheet"type="text/css"href="../../../light.css"id="themeStyle"><linkrel="stylesheet"type="text/css"href="../../../dark.css"disabled><linkrel="stylesheet"type="text/css"href="../../../ayu.css"disabled><scriptsrc="../../../storage.js"></script><noscript><linkrel="stylesheet"href="../../../noscript.css"></noscript><linkrel="shortcut icon"href="../../../favicon.ico"><styletype="text/css">#crate-search{background-image:url("../../../down-arrow.svg");}</style></head><bodyclass="rustdoc fn"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><navclass="sidebar"><divclass="sidebar-menu">☰</div><ahref='../../../map_model/index.html'><divclass='logo-container rust-logo'><imgsrc='../../../rust-logo.png'alt='logo'></div></a><divclass="sidebar-elems"><pclass='location'><ahref='../../index.html'>map_model</a>::<wbr><ahref='../index.html'>make</a>::<wbr><ahref='index.html'>traffic_signals</a></p><script>window.sidebarCurrent={name:'get_possible_policies',ty:'fn',relpath:''};</script><scriptdefersrc="sidebar-items.js"></script></div></nav><divclass="theme-picker"><buttonid="theme-picker"aria-label="Pick another theme!"><imgsrc="../../../brush.svg"width="18"alt="Pick another theme!"></button><divid="theme-choices"></div></div><scriptsrc="../../../theme.js"></script><navclass="sub"><formclass="search-form"><divclass="search-container"><div><selectid="crate-search"><optionvalue="All crates">All crates</option></select><inputclass="search-input"name="search"disabledautocomplete="off"spellcheck="false"placeholder="Click or press ‘S’ to search, ‘?’ for more options…"type="search"></div><spanclass="help-button">?</span>
<aid="settings-menu"href="../../../settings.html"><imgsrc="../../../wheel.svg"width="18"alt="Change settings"></a></div></form></nav><sectionid="main"class="content"><h1class='fqn'><spanclass='out-of-band'><spanid='render-detail'><aid="toggle-all-docs"href="javascript:void(0)"title="collapse all docs">[<spanclass='inner'>−</span>]</a></span><aclass='srclink'href='../../../src/map_model/make/traffic_signals.rs.html#14-90'title='goto source code'>[src]</a></span><spanclass='in-band'>Function <ahref='../../index.html'>map_model</a>::<wbr><ahref='../index.html'>make</a>::<wbr><ahref='index.html'>traffic_signals</a>::<wbr><aclass="fn"href=''>get_possible_policies</a></span></h1><preclass='rust fn'>pub fn get_possible_policies(<br> map: &<aclass="struct"href="../../../map_model/struct.Map.html"title="struct map_model::Map">Map</a>, <br> id: <aclass="struct"href="../../../map_model/struct.IntersectionID.html"title="struct map_model::IntersectionID">IntersectionID</a>, <br> timer: &mut <aclass="struct"href="../../../abstutil/time/struct.Timer.html"title="struct abstutil::time::Timer">Timer</a><'_><br>) -><aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html"title="struct alloc::vec::Vec">Vec</a><<aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/string/struct.String.html"title="struct alloc::string::String">String</a>, <aclass="struct"href="../../../map_model/struct.ControlTrafficSignal.html"title="struct map_model::ControlTrafficSignal">ControlTrafficSignal</a><aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a>></pre><divclass='docblock'><p>Applies a bunch of heuristics to a single intersection, returning the valid results in
best-first order. The signal configuration is only based on the roads connected to the
