The above two I prefer.
The cues for a freeway (top) and tollway (next) are subtle.
Here's another idea for a Tollway, in lieu of the above.
But some people (especially FHWA bureaucrats!) think Americans have to be hit over the head to get them to pay attention, so...
Any one of these three above can be used instead for the Tollways.
The banner screaming "TOLL!" belabors the obvious that the road you're on is a Toll Road.