Q. Who must stop at a Weigh Station?
From the Federal Highway Administration FAQ:
What vehicles must stop at weigh stations? (23 CFR 657.15)
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.
Our past research has concluded that rental trucks are commercial vehicles, and therefore, are required to stop at weigh stations. Most weigh stations have a lane dedicated to smaller moving trucks to avoid delays.
The U-haul web site addresses the issue this way:
On my move, do I need to stop at the weigh stations along the way?
The laws vary from state to state and throughout Canada. Normally U-Haul customers moving their own household goods are not required to stop, because it is not a commercial move. However, some states require that all trucks stop at the weigh stations. If in doubt, stop at the weigh station.
For further information, please contact the relevant state Department of Transportation. Links to state Departments of Transportation and/or state government web sites are available on: http://www.fhwa.dot.gov/webstate.htm