Can more creative use of existing highways and rights-of-way can help us build our way out of gridlock?

Base tolls on speed the faster you go the more you pay.

Congested traffic might be free.

Restrict all but delivery trucks in the day time.

Restrict over the road trucks to night time operation.

Carpooling and HOV lanes help.

Free Tolls for Electric Vehicles

Standardized signage on different parts of an intersections and road markings could aid visual recognition.

Yes smart roads could help.