Google Maps Directions

• Product home: https://mapsplatform.google.com/maps-products/

• API reference: https://developers.google.com/maps/documentation/directions/get-directions

• Traffic: yes (via traffic_model=best_guess + departure_time).

Endpoint

GET https://maps.googleapis.com/maps/api/directions/json

Parameters used

Key	Value
origin	"lat,lon"
destination	"lat,lon"
mode	driving
traffic_model	best_guess
departure_time	now (unix seconds)
key	API key

Response fields we persist

• routes[0].legs[0].duration.value → duration_seconds

• routes[0].legs[0].duration_in_traffic.value → duration_in_traffic_seconds

• routes[0].legs[0].distance.value → distance_meters

• len(routes[0].legs[0].steps) → steps

Caveats

• Without departure_time, Google will not return duration_in_traffic.

• Responses can be very large (step geometry). Consider fields= masking in future versions to stay lean.