First thought - How would they handle all the tractor trailers driving through the state and all the out of state drivers using the roads? I’m pretty sure they could not enforce this requirement on out of state drivers.
Second thought - there has been a budget surplus which is where we got relief on groceries. It sounds like ODOT needs some of this budget surplus instead of creating a new way to generate more revenue.
I don't know if they still do this, but in New Mexico, a trucker is required to stop at a "port of entry" when going into their state. They used to go out and use a stick to poke down into the truck's fuel tank. With that, they would calculate the amount of fuel that was in the tank and charge them a "per gallon tax" on what they bought in another state.