This idea that some good should be free leads only to misery, since nothing is actually free, and to provide a good for free ultimately just means taking it by force from someone to give to someone else, usually in a manner motivated by sentiment. That's not a recipe for efficient allocation of scarce resources.
I clarified my original point. I'm very much not in favor of price controls. I'm even less in favor of the government artificially jacking the price of things though as a sin tax (which is essentially what adding tolls to reduce usage is). The government should use carrots (more better alternatives) not sticks (increased cost).
Roadway space may be somewhat scarce in some areas now but transit infrastructure is not a finite resource. We can always build more. In urban areas we should probably build something other than roads (i.e. subways) though.
