Do you remember the traffic delay introduced in one of the last versions of the PTV Developer Routing API? For the delay we compare the travel time with and without live traffic on the same route (see this blog post).
In the new version of the PTV Developer Routing API V1.11.0 the request parameter ‘TRAFFIC_EVENTS’ provides traffic events chronologically along the route in the event list, together with all other events like waypoints, maneuvers or toll (see this concept). Then you know exactly where and why there is a delay.
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