The short answer
Texas trucks that never leave the state: the USDOT number and your legal name when it is 26,001 lbs or more, seats 16 or more or carries placard-level hazmat (except farm vehicles is under 48,000 lbs).
Texas trucks that never leave the state need USDOT number + legal name on both sides at more than 26,000 lbs (gross, registered, or rated weight — whichever crosses first), or with 16+ passenger seating, or hauling placard-level hazmat at any weight. Texas quirk: farm vehicles are exempt only under 48,000 lbs — a heavy farm truck is still a CMV. Operating unmarked is a Class C misdemeanor (Transp. Code 642.002).
Trucks that cross a state line, or haul freight that starts or ends in another state, follow the federal rule instead: the USDOT number and your legal name when it is 10,001 lbs or more, carries placard-level hazmat, seats 9 or more for hire or seats 16 or more (49 CFR 390.21T(b)(2)).
Rules verified against the primary sources 2026-07-24, next review 2027-01-20. The full citation list is on our Texas truck marking requirements page.
Nine Texas trucks, run through the checker
Each verdict below is what our free compliance checker returns for that truck using the verified Texas and federal rules. Where one changed fact flips the answer, we show the flip, because that is usually where Texas carriers get caught.
1. A 9,000-lb plumber's cargo van on Houston service calls, Texas only
9,000 lbs GVWR · own tools and parts · Texas only
Not required
At 9,000 pounds it is under the 26,001-pound Texas line and it carries general freight with no placard, so no verified Texas or federal rule reaches it.
2. A pickup pulling an equipment trailer on landscaping jobs around Houston, Texas only
20,000 lbs combined · own equipment · Texas only
Not required
At 20,000 pounds it is under the 26,001-pound Texas line and it carries general freight with no placard, so no verified Texas or federal rule reaches it.
Flip one fact: The same rig takes one job in Oklahoma. It is now in interstate commerce, the federal rule applies from 10,001 pounds, and it needs the USDOT number and your legal name on both sides.
3. A 26,000-lb GVWR box truck delivering furniture for pay, Houston only
26,000 lbs GVWR · paid freight · Texas only
Not required
At 26,000 pounds it is under the 26,001-pound Texas line and it carries general freight with no placard, so no verified Texas or federal rule reaches it.
Flip one fact: At 26,001 pounds, one pound more, the same truck needs the USDOT number and your legal name.
4. A 33,000-lb tandem dump truck for a San Antonio contractor, Texas only
33,000 lbs GVWR · paid hauling · Texas only
USDOT number required
The Texas rule reaches this truck because it is 33,000 pounds, over the 26,001-pound line. The checker returns the USDOT number and your legal name, both sides. On the door that reads: USDOT 1234567 · Your Company LLC.
Flip one fact: Rated at 26,000 pounds, the same truck stays under the Texas 26,001-pound line: at 26,000 pounds no verified Texas rule reaches it.
5. A 40,000-lb grain truck on farm plates, Texas only
40,000 lbs GVWR · farm vehicle · Texas only
Not required
At 40,000 pounds it is under the 26,001-pound Texas line, the Texas farm exemption takes it out even at this weight and it carries general freight with no placard, so no verified Texas or federal rule reaches it.
Flip one fact: Take it off the farm exemption, by plating or by use, and it is marked like any other truck at this weight: the USDOT number and your legal name.
6. A 15-passenger hotel shuttle van in Houston, no fare charged
15 seats including the driver · passengers, not for hire · 9,500 lbs GVWR · Texas only
Not required
At 9,500 pounds it is under the 26,001-pound Texas line and 15 seats is under the 16-passenger trigger, so no verified Texas or federal rule reaches it.
Flip one fact: With 16 seats including the driver, the same van needs the USDOT number and your legal name.
7. A 12-passenger paid airport shuttle, Houston only
12 seats · passengers for pay · 9,500 lbs GVWR · Texas only
Not required
At 9,500 pounds it is under the 26,001-pound Texas line and 12 seats is under the 16-passenger trigger, so no verified Texas or federal rule reaches it.
Flip one fact: The same shuttle takes one job in Oklahoma. It is now in interstate commerce, the federal rule applies from 10,001 pounds, and it needs the USDOT number and your legal name on both sides.
8. A 14,000-lb placarded propane bobtail, Texas only
14,000 lbs GVWR · placard-level hazmat · Texas only
USDOT number required
The Texas rule reaches this truck because it carries placard-level hazmat. The checker returns the USDOT number and your legal name, both sides. On the door that reads: USDOT 1234567 · Your Company LLC.
Flip one fact: Haul non-placarded freight in the same truck and the hazmat trigger drops away: at 14,000 pounds no verified Texas rule reaches it.
9. A hotshot pickup and gooseneck running Houston to Oklahoma City loads
26,000 lbs combined · paid freight · interstate
USDOT number required
Because it crosses state lines, the federal marking rule applies: it is 26,000 pounds, over the 10,001-pound line. The checker returns the USDOT number and your legal name, both sides. On the door that reads: USDOT 1234567 · Your Company LLC. Because it hauls for hire across state lines, the checker also lists the MC number as commonly displayed but not required.
Flip one fact: Keep the same rig inside Texas and the federal rule drops away: at 26,000 pounds no verified Texas rule reaches it.
The checker weighs rating, registered and actual weight, operation, for-hire status, cargo, passenger count and farm status. It does not model axle count or vehicle type, so if your truck is unusual, confirm with Texas DMV — Motor Carrier Division (registration) / Texas DPS — Commercial Vehicle Enforcement (marking).
What goes on the door in Texas
- Two markings, both sides of the power unit: USDOT 1234567 and Your Company LLC, which is the USDOT number and your legal name.
- No inch minimum in Texas. The legal standard is a color that contrasts with the truck and letters readable from 50 feet in daylight. We cut 2 and 3-inch letters, which clears that bar on any door.
- One set covers both rules. The Texas markings and the federal markings are the same two items, so a Texas-only truck that later picks up an out-of-state load does not need new decals.
Across the Texas line
The Texas line only matters while the truck stays home. One job in Oklahoma, or one load that starts or ends out of state, makes it interstate commerce, and the federal 10,001-pound rule applies no matter where either state draws its own line. For a truck that works near the border it helps to know how the neighbors differ for their own in-state trucks:
- Arkansas: no verified in-state USDOT rule in our checker (its own rule is about the owner's name).
- Louisiana: 26,001 pounds.
- New Mexico: 26,001 pounds.
- Oklahoma: any weight for hire and 26,001 pounds for trucks hauling their own goods.
Neighbor lines come from the same verified rule files the checker uses; each state's page has its citations.
Who enforces it in Texas
Door markings in Texas are the business of Texas DMV — Motor Carrier Division (registration) / Texas DPS — Commercial Vehicle Enforcement (marking). Questions about your registration or number: (800) 299-1700, agency site. The federal side, USDOT numbers and the MCS-150, is the FMCSA Texas Division: (512) 916-5440, MCTXOFF@dot.gov. A marking violation is written at the roadside and follows the carrier on the inspection report, which is why it is worth getting the two lines right the first time.
For the marking mistakes inspectors catch most often, see USDOT marking mistakes that fail roadside inspections.
Where the Texas rule comes from
- Texas Transp. Code 548.001(1) — CMV = vehicle/combination over 26,000 lbs (gross weight, registered weight, or gross weight rating), or designed/used for more than 15 passengers incl. driver,…
- Texas DPS CVE Markings page — required markings for CMVs = 'USDOT number and Legal Name of Carrier'; reproduces Transp. Code 642.002 (marking offense, Class C misdemeanor; alternative path…
- Texas Transp. Code ch. 643 — TxDMV registration; carrier must hold/maintain a USDOT number (643.052(7), 643.064(b))
- 43 TAC ch. 218 adopted text, 12/12/24 — active USDOT required (218.11(c)); single certificate number; insurance cab card kept in cab (document, not decal); no door-marking spec in ch. 218
- 49 CFR 390.21T — the federal marking rule for interstate carriers
Read in full and verified 2026-07-24; next scheduled review 2027-01-20.
Texas USDOT number FAQ
Does a landscaper's pickup and equipment trailer at 20,000 lbs need a USDOT number in Texas?
Not under the verified Texas rule. At 20,000 pounds it is under the 26,001-pound Texas line and it carries general freight with no placard, so no verified Texas or federal rule reaches it. The same rig takes one job in Oklahoma. It is now in interstate commerce, the federal rule applies from 10,001 pounds, and it needs the USDOT number and your legal name on both sides.
Does a 26,000-lb box truck hauling for pay need a USDOT number in Texas?
Not under the verified Texas rule. At 26,000 pounds it is under the 26,001-pound Texas line and it carries general freight with no placard, so no verified Texas or federal rule reaches it. At 26,001 pounds, one pound more, the same truck needs the USDOT number and your legal name.
Does a 40,000-lb farm truck need a USDOT number in Texas?
Not under the verified Texas rule. At 40,000 pounds it is under the 26,001-pound Texas line, the Texas farm exemption takes it out even at this weight and it carries general freight with no placard, so no verified Texas or federal rule reaches it. Take it off the farm exemption, by plating or by use, and it is marked like any other truck at this weight: the USDOT number and your legal name.
Does a 15-passenger van that charges no fare need a USDOT number in Texas?
Not under the verified Texas rule. At 9,500 pounds it is under the 26,001-pound Texas line and 15 seats is under the 16-passenger trigger, so no verified Texas or federal rule reaches it. With 16 seats including the driver, the same van needs the USDOT number and your legal name.
What exactly goes on the door in Texas?
Two markings, both sides of the power unit: USDOT 1234567 and Your Company LLC, which is the USDOT number and your legal name. No inch minimum in Texas. The legal standard is a color that contrasts with the truck and letters readable from 50 feet in daylight. We cut 2 and 3-inch letters, which clears that bar on any door.
Get the Texas markings cut to spec
USDOT Number Decals
Your USDOT number cut to the 50-foot standard — set of 2, both sides.
$16+Full Compliance Kit
Legal name + USDOT + MC + GVW, all cut to match.
$54.95+USDOT Decals in Texas
Every Texas truck decal we cut, with the Texas rule on one page.
from $16Not sure which truck above is yours? Run the free Texas check, seven questions, sources cited. Rules for other states are in our intrastate USDOT guide and the 50-state rules table.
General information, not legal advice. Fleet Decal Depot is a decal maker, not a government agency. Rules change; confirm with Texas DMV — Motor Carrier Division (registration) / Texas DPS — Commercial Vehicle Enforcement (marking) and FMCSA before you operate.