Traffic Layer

This example creates a map that uses a traffic layer to show real-time traffic information.

Read the documentation.

TypeScript

function initMap(): void {   const map = new google.maps.Map(     document.getElementById("map") as HTMLElement,     {       zoom: 13,       center: { lat: 34.04924594193164, lng: -118.24104309082031 },     }   );    const trafficLayer = new google.maps.TrafficLayer();    trafficLayer.setMap(map); }  declare global {   interface Window {     initMap: () => void;   } } window.initMap = initMap;
index.ts

JavaScript

function initMap() {   const map = new google.maps.Map(document.getElementById("map"), {     zoom: 13,     center: { lat: 34.04924594193164, lng: -118.24104309082031 },   });   const trafficLayer = new google.maps.TrafficLayer();    trafficLayer.setMap(map); }  window.initMap = initMap;
index.js

CSS

/*   * Always set the map height explicitly to define the size of the div element  * that contains the map.   */ #map {   height: 100%; }  /*   * Optional: Makes the sample page fill the window.   */ html, body {   height: 100%;   margin: 0;   padding: 0; } 
style.css

HTML

<html>   <head>     <title>Traffic Layer</title>      <link rel="stylesheet" type="text/css" href="./style.css" />     <script type="module" src="./index.js"></script>   </head>   <body>     <div id="map"></div>      <!--        The `defer` attribute causes the script to execute after the full HTML       document has been parsed. For non-blocking uses, avoiding race conditions,       and consistent behavior across browsers, consider loading using Promises. See       https://developers.google.com/maps/documentation/javascript/load-maps-js-api       for more information.       -->     <script       src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&v=weekly"       defer     ></script>   </body> </html>
index.html

Try Sample

Clone Sample

Git and Node.js are required to run this sample locally. Follow these instructions to install Node.js and NPM. The following commands clone, install dependencies and start the sample application. 

  git clone -b sample-layer-traffic https://github.com/googlemaps/js-samples.git   cd js-samples   npm i   npm start

Other samples can be tried by switching to any branch beginning with sample-SAMPLE_NAME. 

  git checkout sample-SAMPLE_NAME   npm i   npm start