title: Displaying static traffic flow in MapQuest, with Leaflet Plugin
body: <p>I am not sure if MapQuest has an option for this, but I would like to be able to create a map with the Leaflet plugin where traffic flow is not in real time, so that I can only show static traffic for a specific time of the day. Is this possible, maybe with the <a href="https://developer.mapquest.com/docs/api-reference/leaflet-plugins/classes/MQ.Traffic.Flow.html#method_update" rel="nofollow noreferrer">update()</a> method? From the little information they have on this method it doesn't seem as though static traffic can be displayed, but hopefully I am missing something...</p>
  
  <p>This is the basic code snippet that enables traffic flow in the map, under the layer control:</p>
  
  <pre><code>L.control.layers({
      'Map': mapLayer,
      'Dark': MQ.darkLayer(),
      'Hybrid': MQ.hybridLayer()
  }, {
      'Traffic Flow': MQ.trafficLayer({layers: ['flow']}),
      'Traffic Incidents': MQ.trafficLayer({layers: ['incidents']})
  }).addTo(map)
  </code></pre>