Traffic Layer

Sample code for Google Maps Platform JavaScript API author(s): Justin Poehnelt

HTML

<!doctype html>
<!--
 @license
 Copyright 2019 Google LLC. All Rights Reserved.
 SPDX-License-Identifier: Apache-2.0
-->
<html>
  <head>
    <title>Traffic Layer</title>

    <!-- jsFiddle will insert css and js -->
  </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>

CSS

/**
 * @license
 * Copyright 2019 Google LLC. All Rights Reserved.
 * SPDX-License-Identifier: Apache-2.0
 */
/* 
 * 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;
}

JavaScript

/**
 * @license
 * Copyright 2019 Google LLC. All Rights Reserved.
 * SPDX-License-Identifier: Apache-2.0
 */
function initMap() {
  const map = new google.maps.Map(document.getElementById("map"), {
    zoom: 16,
    center: { lat: 54.352060, lng: 18.648415 },
    disableDefaultUI: true,
                  styles: [
                      {
                          "elementType": "labels",
                          "stylers": [
                              { "visibility": "off" }
                          ]
                      },
                      {
                          "elementType": "geometry",
                          "stylers": [
                              { "visibility": "off" }
                          ]
                      },
                      {
                          "featureType": "road",
                          "elementType": "geometry",
                          "stylers": [
                              { "visibility": "on" },
                              { "color": "#ffffff" }
                          ]
                      },
                      {
                          "featureType": "landscape",
                          "stylers": [
                              { "color": "#ffffff" },
                              { "visibility": "on" }
                          ]
                      }
                  ]
  });
  const trafficLayer = new google.maps.TrafficLayer();

  trafficLayer.setMap(map);
}

window.initMap = initMap;