on
Better route was detected. The previous better route ( if exist ) must be considered automatically invalidated This notification is sent when a route is calculated with RoutePreferences.avoidTraffic = true and the engine detects a better route.
Parameters
route
Better route object
travel
Better route travel time in seconds
delay
Better route delay in seconds
time
Time gain from existing route in seconds, -1 means original route has roadblocks and time gain cannot be calculated