Google Maps refresh traffic layer

Question

In my Rails app, the background consists of a fullscreen div with Google Maps and a traffic layer. This is what gets called on page load:

$(function () {  
         


        

Answer 1

This worked for me:

var _mainMap = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
var _gmapTrLayer = new google.maps.TrafficLayer();
_gmapTrLayer.setMap(_mainMap);
setInterval(refreshGmapsTrafficLayer, 60000); // runs every minute

function refreshGmapsTrafficLayer() {
    _gmapTrLayer.setMap(null);
    _gmapTrLayer.setMap(_mainMap);
}