What vehicles must stop at weigh stations?
States determine what vehicles must stop at weigh stations. Some require all commercial motor vehicles to stop, while others require only those above a certain weight to stop. Ultimately, States must certify that they are enforcing their weight limits on certain highways in order not to jeopardize their receipt of Federal highway funds. Excluding a significant number of heavy vehicles from stopping at weigh stations would be inconsistent with such a certification.
