My anecdote on my first experience with this kind of tolling is funny.
I was traveling over Lake Washington for the first time in decades, and found there was no more toll booth, and assumed I would receive the toll invoice in the mail.
Two weeks go by and I didn't receive it.
I go out of town for a month or so and when I get back I found the bill in the mail: $3 or so, cheap!
I write a check and put it in the mail.
A day or two later I get a letter: non payment of toll, now I owe late fees, etc.
I try calling, busy signal.
I get another bill and try calling again a week later and get put on the endless auto hold, I decide to just put my phone on speaker and wait for someone to pick up as I'm at work building a house.
My phone is on hold, canned music and everything, for over two hours when the music stops and I hear a female voice saying "Hello?"
I rush to pick up and express my amazement that I had been on hold for over two hours.
I quickly explain the simple situation when I'm interrupted: "I'm sorry, the fire alarm is going off and we're being told to evacuate the building!"
And that was the end of the call!
She did remove all the late fees though, and the threatening letters stopped.