To get the live traffic data you need to use an individual API key from Google Maps. This is free and easy to get: Go to this page and klick the button "Get a Key": https://developers.google.com/maps/documentation/distance-matrix .

The HTTP request should contain the individual start address, destination address and your private API key. As a starting point you can try this example in combination with your key:

https://maps.googleapis.com/maps/api/distancematrix/json?units=imperial&origins=Washington,DC&destinations=New+York+City,NY&departure_time=now&traffic_model=best_guess&key=YOUR_API_KEY

By inserting this line in the browser URL field you should get the estimated time of arrival and the distance for the requested route in the JSON format. If this works fine just replace the origins and destination address with your own examples. Great!

At Particle's Console in the Web IDE, following the section "Integration" and "New Integration" we can generate a new Webhook via Browser IDE by selecting "Webhook".

Event Name = TrafficIndicator (or anything else you'd like to use in the sketch lateron)

URL = (the above generated & tested HTTP request string)

Request Type = GET

Device = (Your device name)

Response Template = {{origin_addresses}}~{{destination_addresses}}~{{#rows}}{{#elements}}{{distance.text}}~{{duration_in_traffic.text}}{{/elements}}{{/rows}}

Include Default Data = Yes

Enforce SSL = Yes

(Remaining fields can be left blank)

Open the attached INO sketch. Then add the two libraries as described in the sketch and verify that the name of the webhook is inserted correctly. Compile & run the sketch!