This is interesting! If I understand it correctly, it means that damage to roads is completely dominated by trucks, as long as you have more than 10,000 cars p

This is interesting! If I understand it correctly, it means that damage to roads is completely dominated by trucks, as long as you have more than 10,000 cars per truck. Near my home I would estimate it at around 100 cars for every truck. This means that cars are completely negligible, and that supporting road construction and repair by taxes (ideally, direct taxes on the truck users, which is then rolled on to consumers through higher prices) is correct.