This is one way for those who use the roads to help pay for them. Fares paid for transit go to transit investments, so it's fair that those who use roads (most of which don't have tolls) to help pay for their use. This is part of a larger issue, however....transportation in the U.S. I would really like to see some sort of comprehensive effort to embrace transit while also maintaining our paved infrastructure. Having more options for travel makes our economy more flexible, and flexibility is a good thing for an economy, as well as those trying to work their way up in the world.