Texas DOT decal requirements are set by the Texas Department of Motor Vehicles, and every registered commercial power unit has to show three things on each side: the carrier’s legal or trade name, the TxDMV certificate number, and the USDOT number. The letters and figures must be at least two inches tall, contrast sharply with the vehicle’s background, and be permanent. What drivers still call a “TxDOT number” is now a TxDMV number, issued through the department’s Motor Carrier Credentialing System (MCCS).
What Has to Appear on the Truck
Three pieces of information belong on the exterior of every power unit:
- The carrier’s legal name or trade name, exactly as it appears on the certificate of registration.
- The TxDMV certificate number, preceded by the letters “TxDMV.”
- The USDOT number, preceded by “USDOT.”
The name and numbers on the door have to match your registration records. If an inspector reads something different on the truck than what the state database shows, that’s a citation. The disciplinary guidelines treat each element as its own violation: a missing business name, a missing registration number, and lettering that fails the size rule are each independently sanctionable.1Texas Department of Motor Vehicles. Motor Carrier Disciplinary Guidelines
Lettering Size, Color, and Material
All markings must use letters and numbers at least two inches tall.1Texas Department of Motor Vehicles. Motor Carrier Disciplinary Guidelines The color has to contrast sharply with the surface behind it. White lettering on a white truck will not pass, even if the text is technically there. An inspector should be able to read the information from 50 feet away in daylight while the vehicle is stationary.
The markings must also be permanent. Professional paint and high-quality vinyl decals both satisfy this. Magnetic signs, paper placards, chalk, and other removable methods do not. Vinyl that has started to peel or fade past the point of clear legibility puts you out of compliance even if the decal was installed correctly to begin with. A plain, simple font like Arial or Helvetica reads cleanly at distance and avoids trouble during roadside checks.
Where the Markings Go
The information must appear on both sides of the power unit, meaning the truck or tractor itself, not the trailer.2Department of Public Safety. Markings Put them on a vertical surface visible from the roadside. Avoid placing them where a toolbox, fuel tank, fairing, or other equipment can partially obstruct the text.
If another company’s name is already on the vehicle, which is common with leased equipment, the operating carrier’s name and identifying numbers must also appear, preceded by the words “operated by.”2Department of Public Safety. Markings That tells inspectors who is actually responsible for the vehicle on the road.
Rentals and Short-Term Leases
A carrier operating a truck under a rental agreement of 30 days or less does not have to re-letter the rental vehicle. The truck can keep the lessor’s name and USDOT number, provided the rental agreement is carried in the cab for the entire rental period. That agreement has to include the renting carrier’s name, physical address, and USDOT number, along with a cooperation clause under which the lessor will help law enforcement identify the customer operating the vehicle.2Department of Public Safety. Markings
For leases longer than 30 days, the vehicle generally has to display the operating carrier’s legal name and identifying numbers in the standard format. Roadside inspectors will be looking for one arrangement or the other depending on the lease term, and finding neither is a guaranteed citation.
Which Vehicles Have to Be Registered in the First Place
The decal rules only apply to vehicles that need TxDMV registration under Texas Transportation Code Chapter 643. Three categories are covered: intrastate commercial motor vehicles with a gross vehicle weight rating of 26,001 pounds or more; any vehicle designed to carry more than 15 passengers including the driver; and any carrier hauling hazardous materials in quantities that require placarding, regardless of vehicle weight.
Several vehicle types are outside the system: farm vehicles under 48,000 pounds that stay within 150 air-miles of the farm, government-owned vehicles, tow trucks, and vehicles registered with the Railroad Commission.3Texas Department of Motor Vehicles. 43 TAC Chapter 218 – Motor Carrier Registration If you are not sure whether an exemption applies to your operation, registering is the safer path; the penalties for running unregistered are far higher than the registration cost.
One prerequisite catches new carriers: Texas requires an intrastate commercial motor vehicle registrant to have a federal USDOT number before applying for a TxDMV certificate.4Federal Motor Carrier Safety Administration. Do I Need a USDOT Number? The USDOT number is free and is an identifier, not operating authority on its own. Without it, you cannot get the TxDMV number that has to go on the door.
Fees to Get the Number Issued
Applications are filed electronically through MCCS at the TxDMV motor carriers page.5Texas Department of Motor Vehicles. Motor Carriers Every registration has three fee pieces: an application fee, a per-vehicle fee, and a $100 insurance filing fee (Form E).6Texas Department of Motor Vehicles. TxDMV Number
- Annual certificate: $100 application fee, $10 per vehicle, $100 insurance filing.
- Biennial certificate: $100 application fee, $20 per vehicle, $100 insurance filing.
- 90-day certificate: $25 application fee, $10 per vehicle, $100 insurance filing.
- 7-day certificate: $5 application fee, $10 per vehicle, $100 insurance filing.
A single-truck carrier taking the annual certificate pays $210 in total. Credit card payments carry a service charge of $0.25 plus 2.25% of the transaction. Business checks, cashier’s checks, and money orders made out to the Texas Department of Motor Vehicles are also accepted. Household goods carriers and hazardous materials haulers cannot use the 7-day or 90-day options and must hold a full annual or biennial certificate from day one.7Texas Department of Motor Vehicles. Motor Carrier Handbook
Penalties for Missing or Wrong Markings
The TxDMV disciplinary guidelines set specific ranges for the violations that come up on decal enforcement:1Texas Department of Motor Vehicles. Motor Carrier Disciplinary Guidelines
- Missing business name on the power unit: $500 to $1,000.
- Missing registration number on the power unit: $500 to $1,000.
- Lettering under two inches or not clearly legible: $500 to $1,000.
- Operating without registration at all: $500 to $1,000 per violation.
- Hauling household goods without registration: $1,000 to $2,000 per violation.
Fines are not the only exposure. The department can suspend or revoke a motor carrier’s registration for repeated violations. During a roadside inspection, a truck without proper markings or registration can be placed out of service until the problem is fixed, which means the load sits where the inspector stops it. The delay usually costs more than the fine.