Here you can see how we taught our OsmAnd app to display Google traffic. Feel free to copy this, of course, at your own risk.

The explanation and screenshots are based on iOS; they may vary slightly on Android.

On the "Add Online Source" page, we entered the following information:

Name

Google Traffic

URL

http://mts0.googleapis.com/vt/lyrs=m,traffic&x={1}&y={2}&z={0}&style=3

Zoom Levels - Minimum

1

Zoom Levels - Maximum

22

Expiration Time

5

Mercator Projection

Pseudo-Mercator Projection (this is the default value; don't ask us what this means or what other settings do)

Source Format

One image file per tile (this is also the default value; don't ask us what this means or what other settings do)

Then click "Save"...