Do Food Trucks Need a DOT Number?

The short answer

A food truck is a commercial vehicle like any other. Selling tacos instead of hauling freight doesn't exempt it. Whether you need a USDOT number depends on the same triggers every truck faces: weight, where you drive, and (rarely for food trucks) hazmat or passengers. Plenty of small trailers and light vans need nothing. Plenty of converted step vans and box trucks do.

The federal rule: if you ever leave the state

Under federal rules (49 CFR 390.5T and 390.21T), a vehicle used in interstate commerce needs a USDOT number, and must show it along with your business name on both sides, if any of these apply:

• Its weight rating (GVWR or combined truck + trailer rating) or its actual loaded weight, whichever is greater, is 10,001 lbs or more
• It carries hazardous materials in amounts that require placards
• It's designed or used to carry 9+ people for pay, or 16+ people total

The lettering must contrast sharply and be readable from 50 feet in daylight. See USDOT number size & display rules for what that looks like in practice.

Most food trucks never leave the state, so your state decides

If your trucks stay inside one state, federal marking rules don't apply directly. Your state's rules do, and states set the weight line in very different places. From our verified state data:

• 10,001 lbs: Georgia, Illinois, New York, Washington, Massachusetts and others treat in-state trucks like the federal rule
• 17,001 lbs: Pennsylvania
• 18,001 lbs: Connecticut
• 26,001 lbs: Nevada, Arizona, Florida, North Carolina and others only pull in-state trucks in at the heavy end
• California: requires a CA carrier number and your name on both sides for trucks over 10,000 lbs. Showing your USDOT number satisfies the CA number display, and most operators show both (CA number decals).

That's why the same 14,000-lb step van can need full DOT markings in Atlanta and none in Las Vegas. The complete list is in our DOT marking rules by state table, and intrastate USDOT rules explains the split.

How heavy is your food truck, really?

Find the GVWR on the sticker in the driver's door jamb. A lot of food trucks land right in the gray zone between 10,001 and 26,000 lbs. Kitchens are heavy: fridges, fryers, a generator, and full water tanks add up quickly. Remember that the federal test counts actual loaded weight as well as the rating. If you're pulling a kitchen trailer, the truck and trailer ratings combine. Our GVWR explainer covers the terms.

Propane, generators, and the hazmat question

The hazmat trigger applies to amounts that require placards, and it can catch a truck at any weight. Cooking propane in tanks mounted on the truck is generally treated differently from hauling propane as cargo. Still, the details depend on quantity and how it's carried. If you move extra cylinders or bulk fuel between locations, confirm with your state DOT rather than assuming you're clear.

Festivals, catering, and crossing state lines

This is where food trucks get caught. Driving from Las Vegas to a festival in Arizona, or catering across the river in a neighboring state, makes that trip interstate, and the federal 10,001-lb rule applies to it. If you book any out-of-state events, plan your markings around the federal rule, not just your home state's. You're selling your own product, not hauling for hire, so operating authority (an MC number) generally isn't in the picture. Read what "not for hire" really means.

The health department is a separate rulebook

DOT markings and health-permit markings are two different things. Many counties require the business name on a mobile food unit, and sometimes a city, permit number, or commissary. These specs are set locally and vary a lot, so check your county's mobile-vendor rules. A DOT number doesn't satisfy the health department, and a health permit doesn't satisfy the DOT.

What to put on the truck

• If DOT marking applies: business name + "USDOT #######" on both sides, readable from 50 feet. Our USDOT decals are cut to that spec.
• Branding and service window: truck name, ORDER HERE at the window, and phone/social. Our food truck lettering package lays all of it out on a photo of your truck, including any lines your county requires.