I accidentally got on 183-A when coming home from my mother’s funeral and took the first exit once I realized my error. There are no toll booths here and, while there are warning signs, the paths to take 183 (no-toll) and 183-A (toll) were confusing to me.
There was no place to make immediate restitution but when I got a bill in the mail a couple of weeks later, my charge had become $6.80, thanks to “administrative costs”. I would have gladly paid $.50 at the time if they had only provided a basket to pitch it into as there are on other area toll roads.
The whole things smelled like a scam to me. I avoid toll roads whenever possible except in long interstate travel where the toll road is clearly the best option.
I would suggest getting a TxTag to avoid the Bill-by-Mail administrative costs. You never know when you might be staying in Houston or the Metroplex and need to use one of their toll roads.
JMO.