Our customer has asked us about the need for the USDOT numbers on the side of their 1)2004 G3500 boxvan, GVWR 12,000 lbs and 2)1990 F450 rollback flat bed at 14,500 gvwr. They are 99% INTRASTATE, seldom venture over state lines. I researched, via goolgle, USDO... Login to read more.