'DirectionsTrafficSpeedEntry array is always empty in Directions API

Directions API - missing response data in DirectionSteps field: traffic_speed_entry. The array is always empty. Example:

https://maps.googleapis.com/maps/api/directions/json?origin=Disneyland&destination=Universal+Studios+Hollywood&key=YOUR_KEY&departure_time=now

under steps: "traffic_speed_entry": []

Any hints on what I am doing wrong?



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