Key Takeaways
- Every commercial truck and trailer needs a full annual inspection at least once every 12 months under 49 CFR 396.17. Each unit in a combination counts on its own.
- Texas-registered commercial vehicles also fall under the Texas DPS Commercial Motor Vehicle Compulsory Inspection program, which federal regulators consider equal to the federal annual inspection.
- A roadside inspection is a separate event. A clean Level I or Level V can earn a CVSA decal that stays valid for the month of issue plus two months.
- Once a truck is placed out of service, it stays off the road until the defect is repaired. Inspectors pay close attention to brakes, tires, lighting, and cargo securement.
- Keep each annual inspection report for 14 months, and carry proof of the inspection on the vehicle.
If you have ever typed “dot inspection near me” into your phone while a truck sat idle, you already know how much a missed inspection can cost. A lapsed certificate, a worn brake lining, or a loose strap can turn a normal workday into complete chaos.
This guide walks through what San Antonio fleets actually need to have in place, what inspectors look at, and how to get ahead of the problems that park trucks.
Annual Inspection vs. Roadside Inspection
Two separate events fall under the name “DOT inspection.” The first is the annual inspection, which 49 CFR 396.17 calls a periodic inspection. A qualified inspector performs and documents it for every commercial motor vehicle at least once every 12 months. The tractor, each trailer, and any converter dolly are inspected as separate units. The second is the roadside inspection, which can happen without warning at a weigh station or on the shoulder. Officers certified through the Commercial Vehicle Safety Alliance, or CVSA, run these. They can look at the driver, the vehicle, or both, and they can happen any day of the year, no matter when your last annual inspection was done.
You need to be ready for both.
What the Annual Inspection Means in Texas
Two sets of rules apply to a Texas-registered truck. Part 396 of the Federal Motor Carrier Safety Regulations (FMCSA) applies in Texas. The Texas Department of Public Safety adds its own Commercial Motor Vehicle Compulsory Inspection program on top of it. Because federal regulators consider that program equal to the federal annual inspection, a passing result satisfies the federal requirement too. The certified inspection station issues an inspection report to each vehicle that passes.
Not every Texas-registered vehicle falls under the program. An exception applies when a vehicle is domiciled out of state. A vehicle registered in Texas under the International Registration Plan but domiciled elsewhere is exempt, provided it holds a certificate of inspection that complies with the Federal Motor Carrier Safety Regulations (FMCSA). Before scheduling, check with Texas DPS. The vehicle types and weight limits the program covers can change.
Who performs the inspection matters as well. Carriers must keep proof of an inspector’s qualifications on file. Under 49 CFR 396.19, that person has to be qualified through the required training or experience.
What Does a DOT Inspector Check on a Semi Truck?
This is the question most drivers and fleet managers really want answered. The annual inspection follows Appendix A to Part 396, which sets the minimum standards. In plain terms, the inspector goes through these systems.
- Brake system, including linings, drums, rotors, air lines, and adjustment
- Coupling devices such as the fifth wheel and kingpin
- Exhaust and fuel systems, looking for leaks and loose parts
- Lighting devices and reflectors
- Steering mechanism and suspension
- Frame and frame members
- Tires, wheels, and rims
- Windshield glazing and wipers
- Rear impact guard on trailers
- Safe loading and cargo securement points
A full roadside Level I inspection goes even further. It is the most thorough roadside check and follows a 37-step process covering both the driver and the truck. The driver side includes the license, medical certificate, hours of service records, and electronic logging device data.
Drivers who walk the truck through the same systems an inspector covers get the first chance to spot defects. Some defects are easier to fix before an inspector finds them.
Roadside Inspection Levels and the CVSA Decal
CVSA breaks roadside stops into levels. Level I is the full driver and vehicle inspection. Level II is a walk-around. Level III looks only at the driver and credentials. Level V is a vehicle-only inspection, and it can happen without the driver present.
Only Level I and Level V inspections can lead to a CVSA decal. If the vehicle passes with no critical violations, the inspector places the decal on the truck. It stays valid for the month of issue plus two months, and the color changes by quarter. A truck with a current decal is generally not re-inspected at the next stop, unless an inspector notices a new problem. The decal does not replace regular maintenance. When inspection issues or unexpected breakdowns occur, Roadside Assistance San Antonio services can help truck drivers get back on the road.
If a later inspection finds the truck below the minimum standards, the decal gets removed.
Understanding Out-of-Service Violations
An out-of-service violation stops the driver or vehicle from operating until the problem is corrected. The result for a fleet can be a delayed delivery, a repair bill, and a mark on the safety record.
CVSA’s 2026 International Roadcheck took place May 12 to 14. Cargo securement was the vehicle focus, and ELD tampering or falsification was the driver focus. These focus areas direct extra inspector attention, though the full inspection still applies. Brakes and tires continue to appear among the top reasons trucks are removed from service in recent Roadcheck results.
Fleets can get ready by reviewing brake adjustment and wear first. Tire tread and inflation, lights, straps, and tie-downs come next.
Records You Need to Keep
Paperwork fails more fleets than people expect. Keep these basics in order.
- Each annual inspection report stays on file for 14 months from the inspection date, at the location where the vehicle is housed or maintained.
- Proof of the most recent inspection, either the report or a compliant decal, rides on the vehicle.
- Evidence of your inspector’s qualifications stays on file while they perform inspections for you and for one year afterward.
- Driver vehicle inspection reports, or DVIRs, document defects drivers find at the end of the day and how they were handled.
To an auditor, a missing inspection report looks the same as an inspection that never took place.
How to Prepare Before the Inspector Arrives
A little routine goes a long way. Here is a simple approach that works for most fleets in the San Antonio area.
- Have drivers complete a real pre-trip walk-around, not a quick glance, every day.
- Fix defects from DVIRs right away and record the repair.
- On a regular schedule, review brake stroke and linings, and look for air system leaks.
- Tires need a check for tread depth, damage, and proper inflation.
- Testing every light comes next, along with replacing cracked lenses and missing reflectors.
- Review cargo securement gear for frays, cuts, and worn chains.
- Compare ELD records against dispatch and fuel receipts so the story lines up.
- Mark each unit’s annual due date on a calendar you actually look at.
Fleets that treat inspection day like any other day tend to have fewer surprises. The ones that scramble the night before usually find out the hard way.
Getting Your DOT Inspection Done in San Antonio
Searching for a “DOT inspection near me” usually means you want it done fast and done right, ideally without losing a week of revenue. Truck Masters is based in San Antonio and offers DOT inspections, 24/7 truck repair, trailer repair, and roadside assistance. If an inspection finds a worn brake component or a faulty light, repair services are also available.
If you run an annual DOT inspection truck schedule across several units, ask about timing before the due dates pile up. Call Truck Masters to book a DOT inspection in San Antonio and keep your fleet moving.
Frequently Asked Questions
What do annual DOT inspection truck rules require?
A full annual inspection in accordance with 49 CFR 396.17 must be performed at least once every 12 months. The tractor, each trailer, and any converter dolly shall be inspected as a separate entity.
How do I find a DOT inspection near me in San Antonio?
Truck Masters in San Antonio offers DOT inspections, along with 24/7 truck repair, trailer repair, and roadside assistance. Before the due dates pile up, ask about timing.
Who requires the annual inspection and who performs it?
A qualified inspector under 49 CFR 396.19 performs and documents the inspection, which the FMCSA requires. The carrier then keeps each report for 14 months.
What is an out-of-service violation?
Operation stops for the driver or vehicle until the problem is corrected. For a fleet, that can bring a delayed delivery, a repair bill, and a mark on the safety record.
