New Jersey solved this: just put up signs saying “you’re on a toll road, go check what you owe and pay later”. No toll plaza!

Then when you forget, which you 100% will if you’re not dealing with it frequently, or just reasonably assume they’ll send you a bill—ta-da! First communication they send is a nastygram assessing an extra $50 for every toll you forgot to go beg to pay when you got home.

Ingenious way to screw non-locals, and no toll plazas needed!