<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="The various traffic signal generators live in the traffic signal module. Eventually, we might want to move to a trait. For now, there’s a single make_traffic_signal static method in each generator file, which is called to generate a traffic signal of a particular flavor."><meta name="keywords" content="rust, rustlang, rust-lang, traffic_signals"><title>map_model::make::traffic_signals - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../../../dark.css" disabled><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script src="../../../crates.js"></script><script defer src="../../../main.js"></script>
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        </a><h2 class="location"><a href="#">Module traffic_signals</a></h2><div class="sidebar-elems"><section><div class="block"><ul><li><a href="#modules">Modules</a></li><li><a href="#constants">Constants</a></li><li><a href="#functions">Functions</a></li></ul></div></section><div id="sidebar-vars" data-name="traffic_signals" data-ty="mod" data-relpath="./"></div><script defer src="./sidebar-items.js"></script></div></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../../../map_model/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><nav class="sub"><div class="theme-picker hidden"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="22" height="22" alt="Pick another theme!" src="../../../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></form></nav></div><section id="main-content" class="content"><div class="main-heading">
    <h1 class="fqn"><span class="in-band">Module <a href="../../index.html">map_model</a>::<wbr><a href="../index.html">make</a>::<wbr><a class="mod" href="#">traffic_signals</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../../../clipboard.svg" width="19" height="18" alt="Copy item path"></button></span></h1><span class="out-of-band"><a class="srclink" href="../../../src/map_model/make/traffic_signals/mod.rs.html#1-502">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>The various traffic signal generators live in the traffic signal module. Eventually, we
might want to move to a trait. For now, there’s a single make_traffic_signal static method
in each generator file, which is called to generate a traffic signal of a particular flavor.</p>
<p>For example, lagging_green.rs contains a one public fn:
pub fn make_traffic_signal(map: &amp;Map, i: IntersectionID)-&gt;Option<ControlTrafficSignal></p>
</div></details><h2 id="modules" class="small-section-header"><a href="#modules">Modules</a></h2>
<div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="mod" href="lagging_green/index.html" title="map_model::make::traffic_signals::lagging_green mod">lagging_green</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div></div><h2 id="constants" class="small-section-header"><a href="#constants">Constants</a></h2>
<div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="constant" href="constant.PROTECTED.html" title="map_model::make::traffic_signals::PROTECTED constant">PROTECTED</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="constant" href="constant.YIELD.html" title="map_model::make::traffic_signals::YIELD constant">YIELD</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div></div><h2 id="functions" class="small-section-header"><a href="#functions">Functions</a></h2>
<div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.all_walk_all_yield.html" title="map_model::make::traffic_signals::all_walk_all_yield fn">all_walk_all_yield</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.degenerate.html" title="map_model::make::traffic_signals::degenerate fn">degenerate</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.expand_all_stages.html" title="map_model::make::traffic_signals::expand_all_stages fn">expand_all_stages</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.four_way_four_stage.html" title="map_model::make::traffic_signals::four_way_four_stage fn">four_way_four_stage</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.four_way_two_stage.html" title="map_model::make::traffic_signals::four_way_two_stage fn">four_way_two_stage</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.get_possible_policies.html" title="map_model::make::traffic_signals::get_possible_policies fn">get_possible_policies</a></div><div class="item-right docblock-short"><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
intersection.</p>
</div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.greedy_assignment.html" title="map_model::make::traffic_signals::greedy_assignment fn">greedy_assignment</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.half_signal.html" title="map_model::make::traffic_signals::half_signal fn">half_signal</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.make_stages.html" title="map_model::make::traffic_signals::make_stages fn">make_stages</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.new.html" title="map_model::make::traffic_signals::new fn">new</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.stage_per_road.html" title="map_model::make::traffic_signals::stage_per_road fn">stage_per_road</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.synchronize.html" title="map_model::make::traffic_signals::synchronize fn">synchronize</a></div><div class="item-right docblock-short"><p>Simple second-pass after generating all signals. Find pairs of traffic signals very close to
each other with 2 stages each, see if the primary movement of the first stages lead to each
other, and flip the order of stages if not. This is often wrong when the most common movement is
actually turning left then going straight (near Mercer for example), but not sure how we could
know that without demand data.</p>
</div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.three_way.html" title="map_model::make::traffic_signals::three_way fn">three_way</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div></div></section><section id="search" class="content hidden"></section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="map_model" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.61.0 (fe5b13d68 2022-05-18)" ></div>
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