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Dump truck lettering: USDOT, CA number and the name on the door
Intrastate doesn't get you out of it
Most dump trucks never leave the state, and owners assume federal rules don't apply. California, Texas, New York, Georgia, Ohio and about 30 other states require a USDOT number for intrastate commercial vehicles over their threshold. Check the state page; California's threshold is 10,001 lbs and every dump truck is over it.
What goes on the door
Legal name, USDOT number, and in California the CA number. Two inch numbers minimum; dump truck doors are big and 2.5 inch reads better from a distance. Many operators also put the unit number on the door for dispatch.
Dirt, dust and vinyl
Dump truck doors get pressure washed weekly. Cut vinyl handles it; keep the wand a foot back from the edges. Reflective vinyl is popular on trucks that work night paving jobs.
Related questions
Do I need a CA number on a dump truck?
If you operate for business in California, yes, with a Motor Carrier Permit. Display it with the USDOT number.
What about the GVW on the door?
California doesn't require it. New Jersey and Utah do; check your state page.
Checked against 49 CFR 390.21, 13 CCR 1256 and B&P 7029.6, September 2026. Plain-English summary, not legal advice.