To my knowledge the only way to estimate the toll for a route, i.e. from Baltimore, Maryland, USA to Guelph, Ontario, Canada, is as follows.
- Get the list of highways route info from Google maps.
- Go to the website of each authority.
- For each highway, research the entry and exit points from Google map and related them to the authority defined regions.
- List the tolls from the authority defined regions and sum them up.
I don't want anyone else to do this for me. I can do it by myself. But is there any easier way? Can anyone at least give me a rough estimate like whether it is around $50, $100, $150? Thanks.