Unable to get correct ETA using Google Maps API - google-maps

Question

I am collecting ETA for few locations for some project work. I get different time duration during different point of time, but there is one case which returns same results
Origin: Acres Club, 411-B, Hemu Kalani Marg, Sindhi Society, Chembur, Mumbai, Maharashtra
Destination: Chhatrapati Shivaji Terminus, Chhatrapati Shivaji Terminus Area, Mumbai, Maharashtra
This always returns 1702 seconds.
Below is the API call I am making:
https://maps.googleapis.com/maps/api/distancematrix/json?origins=Acres%20Club,%20411-B,%20Hemu%20Kalani%20Marg,%20Sindhi%20Society,%20Chembur,%20Mumbai,%20Maharashtra&destinations=Chhatrapati%20Shivaji%20Terminus,%20Chhatrapati%20Shivaji%20Terminus%20Area,%20Mumbai,%20Maharashtra&key=
Let me know if I am missing anything. Thanks in Aadvance.

Answer 1

If I understand correctly you are interested in getting a duration taking into account current traffic conditions. Please note that duration with traffic conditions requires a departure time to be specified in your request.
Have a look at the documentation that reads:
departure_time — The desired time of departure. You can specify the time as an integer in seconds since midnight, January 1, 1970 UTC. Alternatively, you can specify a value of now, which sets the departure time to the current time (correct to the nearest second).
For requests where the travel mode is driving: You can specify the departure_time to receive a route and trip duration (response field: duration_in_traffic) that take traffic conditions into account. This option is only available if the request contains a valid API key, or a valid Google Maps APIs Premium Plan client ID and signature. The departure_time must be set to the current time or some time in the future. It cannot be in the past.
https://developers.google.com/maps/documentation/distance-matrix/intro#DistanceMatrixRequests
I would suggest changing you request to
https://maps.googleapis.com/maps/api/distancematrix/json?origins=Acres%20Club%2C%20411-B%2C%20Hemu%20Kalani%20Marg%2C%20Sindhi%20Society%2C%20Chembur%2C%20Mumbai%2C%20Maharashtra&destinations=Chhatrapati%20Shivaji%20Terminus%2C%20Chhatrapati%20Shivaji%20Terminus%20Area%2C%20Mumbai&departure_time=now&traffic_model=best_guess&key=YOUR_API_KEY
In this case you will see something similar to
"rows":[
{
"elements":[
{
"distance":{
"text":"16.2 km",
"value":16206
},
"duration":{
"text":"28 mins",
"value":1702
},
"duration_in_traffic":{
"text":"45 mins",
"value":2715
},
"status":"OK"
}
]
}
],
in your response. Where duration_in_traffic shows duration taking into account current traffic conditions and duration is a typical average duration.
Hope this helps!