Someone asked about weight of 26001 lbs and weight scales. The 26001 lb number generally refers to at what point you need a commercial drivers license. 26000 lbs and lower generally can be driven with a regular Class C license (U-haul type trucks). Also, pulling two trailers (Doubles) are legal if 1) you have a doubles endorsement, either commercial or non-commercial, 2) The front trailer must be a 5th wheel (no bumper or frame hitch trailers as a first trailer. Also, many truck scales clearly have signs that say "No pickups". Most scalemasters I ever talked to are not worried about trucks that may be slightly over weight. They want the trucks that are way over. Most scales only check axle weights and I don't recall seeing any axle weight specs for pickup type trucks. And sometimes it's hard to see if it's a half, three-quarter, or one ton truck from inside the scale house. But as was already stated, the scales are for commercial vehicles only. By the way, I often see RV trailers being pulled at 65 MPH plus, and in the far left lanes. This is asking for a ticket in California. Here, a "truck" is defined, for purposes of speed and lane restrictions, as any vehicle with three or more axles. This could include boats being pulled and motorcycles with trailers. It's usually up to the officer if he/she wants to ticket or not but should there be an accident, the vehicle is running illegal.