How to find the Tolls in Google Map API?

Question

I am using Google Map API 3.0 to calculate the distance of two places. I can calculate it easily.

But now I need to find out every bridge or ferry service tolls (if any).

For example if I try to get the route direction of [DFW Airport, Grapevine, TX, USA] to [McKinney, TX, USA] in Google Map I get “This route has tolls”. But using Google Map API I can’t find it. How can I figure out this?

Answer 1

I think Google Maps gives advice about tolls and ferries. But Google Maps API totally ignore these.