If you’re operating a commercial vehicle in Texas, understanding the rules around the USDOT Number in Texas is crucial. Whether you’re driving intrastate or across state lines, there are specific federal and state regulations you must follow to stay compliant and avoid hefty fines.
In this article, we’ll break down what a USDOT Number is, who needs one, and the key rules set by both the Federal Motor Carrier Safety Administration (FMCSA) and the Texas Department of Motor Vehicles (TxDMV). If you’re new to the trucking industry or looking to ensure your business is operating legally, this guide will help.
What is a USDOT Number?
A USDOT Number is a unique identifier issued by the FMCSA. It allows regulators to track a company’s safety records, inspections, compliance reviews, and accident history.
In Texas, you might also be required to get a Texas DOT Number, depending on whether you operate within the state or across state lines.
Who Needs a USDOT Number in Texas?
You must have a USDOT Number in Texas if you operate a commercial motor vehicle (CMV) that:
- Is used to transport passengers or goods in interstate commerce, and
- Weighs 10,001 pounds or more, or
- Transports hazardous materials requiring placarding, or
- Is designed to transport 9 or more passengers (including driver) for compensation, or
- Is designed to transport 16 or more passengers (including driver) without compensation
If you’re operating only within Texas (intrastate), and your vehicle meets similar conditions, the Texas DOT Number is required by the TxDMV.
Key Federal USDOT Rules You Must Follow
Once you have your USDOT Number, you are subject to several federal safety and compliance regulations.
1. Vehicle Markings
All CMVs must display the USDOT number on both sides of the truck, along with the legal business name. The lettering must be:
- In contrast color to the vehicle
- At least 2 inches tall
- Easily readable from 50 feet
2. Driver Qualification Files (DQF)
You must maintain a file for each driver, including:
- A copy of the CDL (Commercial Driver’s License)
- Medical examiner’s certificate
- Road test results
- Employment history verification
- Driving records (MVR)
3. Hours of Service (HOS) Compliance
Drivers are limited on how long they can drive:
- 11 hours of driving after 10 consecutive off-duty hours
- 14-hour limit including breaks, on-duty time, etc.
- 60/70 hour rule over 7/8 consecutive days
You must use Electronic Logging Devices (ELDs) to track hours unless exempt.
4. Vehicle Inspections & Maintenance
You must:
- Conduct pre-trip and post-trip inspections
- Keep maintenance records
- Perform annual inspections by a certified inspector
- Maintain brake system and tire records
5. Drug & Alcohol Testing Program
All CDL drivers must be enrolled in a drug and alcohol testing program that includes:
- Pre-employment testing
- Random testing
- Post-accident testing
- Reasonable suspicion testing
- Return-to-duty testing
Failure to comply can result in heavy penalties and disqualification of drivers.
6. Accident Reporting
You must keep records of all reportable accidents involving:
- Fatalities
- Bodily injuries needing immediate medical attention away from the scene
- Disabling damage requiring tow-away
These reports must be kept for 3 years.
Texas-Specific USDOT Rules to Follow
In addition to federal regulations, Texas has its own rules for commercial motor carriers.
1. Texas DOT Number Requirement
If you operate a CMV only within Texas (intrastate), you still need a Texas DOT Number if your vehicle:
- Weighs more than 26,000 pounds, or
- Transports hazardous materials, or
- Is designed for passenger transport, or
- Falls under for-hire or private commercial use
This number is issued by the TxDMV, and compliance is enforced by the Texas Department of Public Safety (TxDPS).
2. Texas Cab Card & Proof of Insurance
You’ll need to maintain and carry:
- Cab cards
- Insurance documents that meet state-required liability limits
- $500,000 to $1,000,000 depending on the vehicle and cargo
3. Texas Intrastate Authority
Some intrastate carriers need a separate operating authority from the TxDMV in addition to their Texas DOT Number.
Texas Trucking Permits Services: Why You Need Them
Keeping up with USDOT compliance can be overwhelming, especially when you’re just getting started. This is where Texas Trucking Permits Services come in. They can assist with:
- Applying for USDOT and Texas DOT Numbers
- Managing compliance paperwork
- Filing BOC-3 forms and MCS-150 updates
- Helping you stay current on insurance and registrations
- Ensuring you meet both federal and state regulations
Using a trucking permit service saves you time, helps avoid costly errors, and ensures you stay compliant throughout the year.
What Happens If You Don’t Comply?
Operating a CMV without a USDOT or Texas DOT Number—or failing to follow the rules—can lead to:
- Fines up to $10,000+
- Vehicle impoundment
- Out-of-service orders
- Suspension of operating authority
- Insurance complications
- Permanent marks on your safety record
For new carriers especially, these penalties can halt your business before it even gets off the ground.
How to Stay Compliant Year-Round
Here are a few tips to keep your trucking business in good standing:
- Update MCS-150 (every 2 years)
- Renew Texas DOT Number as needed
- Maintain active insurance
- Enroll in drug & alcohol testing programs
- Keep accurate driver logs and maintenance records
- Use a reliable trucking permit service in Texas
Final Thoughts
If you’re running a trucking business in Texas, having a valid USDOT Number in Texas is only the beginning. From federal FMCSA regulations to state-level Texas DOT Number rules, the compliance landscape is detailed—and constantly changing.
Partnering with a professional Texas Trucking Permits Services provider ensures you meet all requirements and avoid disruptions to your operations. Whether you’re a new owner-operator or scaling your fleet, staying compliant with USDOT rules is key to long-term success.