They can also enforce existing laws better. Don't forget that most states have had truck laws for a very long time. We know there is a direct linkage between vehicle weight and road maintenance costs. We've had laws that required vehicles to be weighed. We've had laws that taxed vehicles that exceeded certain weights on given roads. We've had laws banning vehicles of certain weights from certain roads. We could turn those laws "back on", get back to enforcing them better, adjust their fines and penalties to match a decade or three of inflation.

(For instance, Hummers are allegedly already technically illegal by weight on California residential streets. When was the last time that was enforced? When was the last time an owner paid fines on that?)