The impact on roads created by light duty cars and trucks, from small compacts to large pickups, is essentially uniform for all vehicles. A 2007 American Association of State Highway and Transportation Officials (AASHTO) report found that vehicles weighing between 2,000 and 7,000 lbs. produce approximately the same wear and tear on our roads. Whether you drive a 2,500 lb. Toyota Prius or a 6,500 lb. Hummer, there is no significant difference in the impact these vehicles have on a typical highway.
Many states implement weight-mile taxes for large, commercial freight trucks based on the number of axles, vehicle weight, and miles traveled. The federal government has estimated that a 40-ton, 18-wheel truck with a max payload causes the same damage as 9,600 midsize cars. This helps ensure that these heavier vehicles pay their fair share for the additional wear and tear they inflict on our roadways.