What a Texas CDL is and who needs one

A Commercial Driver's License (CDL) in Texas is a special driver's license that lets you operate certain large or heavy vehicles for pay. You need one to drive a tractor-trailer, a bus with more than 15 passengers, a tanker truck, or most vehicles carrying hazardous materials. If you drive these vehicles without a CDL, you face fines and can lose your regular license.

Texas issues CDLs through the Department of Public Safety (DPS). The process involves written tests, a skills test, and medical certification. You cannot skip steps or test online — you must go to a DPS office in person for the driving exam.

Key Takeaways

  • You must be at least 18 years old in Texas to get a CDL, though some employers require you to be 21 for interstate driving.
  • Before you test, you need a valid Texas driver's license and a medical certificate from a doctor approved by the Federal Motor Carrier Safety Administration.
  • The written tests cover general knowledge, air brakes, and the specific endorsement you want (tanker, hazmat, passenger, or doubles/triples).
  • The skills test happens at a DPS office and includes a pre-trip inspection, a backing exercise, and a road test in an actual commercial vehicle.
  • The entire process from first study to passing the skills test typically takes four to eight weeks, depending on how quickly you schedule your tests.

Age, license, and medical requirements to start

You must be at least 18 years old to get a CDL in Texas. However, if you want to drive across state lines, many trucking companies require you to be 21. Check with your employer before you begin the process, because this affects which jobs you can take after you pass.

You also need a valid Texas driver's license before you can test for a CDL. If your license is suspended, revoked, or expired, you must renew it first. You cannot hold a CDL and a regular license at the same time — your CDL replaces your regular license once you pass.

Before you take any written test, you must have a medical certificate from a doctor on the Federal Motor Carrier Safety Administration's (FMCSA) approved list. This certificate confirms you can safely operate a commercial vehicle. You can find approved doctors through the FMCSA National Registry at fmcsa.dot.gov. The certificate is valid for two years, and you will need to renew it before it expires if you want to keep your CDL.

Written tests: what you study and when you take them

The written portion has three parts. The first is the General Knowledge test, which covers commercial driving rules, vehicle inspection, and safe driving practices. Everyone takes this test. It has 50 questions, and you must score at least 80 percent to pass.

The second part depends on your vehicle. If you will drive a truck with air brakes, you must pass the Air Brakes test. This covers how air brake systems work and how to inspect them. If your truck has hydraulic brakes only, you can skip this test. The Air Brakes test has 25 questions and also requires 80 percent.

The third part is your endorsement test. Texas offers endorsements for hazardous materials (Hazmat), tanker trucks, passenger vehicles, and doubles/triples (two or three trailers). You only take the test for the endorsement you need. Each endorsement test has 20 to 30 questions and requires 80 percent. You can take multiple endorsement tests on the same day if you need more than one.

You can take the written tests at any DPS office that offers CDL testing. Study materials are free on the DPS website. Many people study for two to four weeks before testing. You can retake any written test the next business day if you fail, but you must pay the fee again.

The skills test: pre-trip, backing, and road driving

Once you pass all written tests, you schedule a skills test at a DPS office. This is a driving exam in an actual commercial vehicle, and it has three parts. You must bring the vehicle yourself or arrange for the testing office to provide one — policies vary by location, so call ahead.

The first part is the pre-trip inspection. You walk around and inside the vehicle while an examiner watches and listens. You point out and name safety-critical parts: lights, brakes, tires, mirrors, coupling devices, and emergency equipment. You must show you know what to check and why. This takes about 15 minutes.

The second part is the backing exercise. You back the vehicle into a marked space, usually a 90-degree alley dock or a parallel parking spot. You cannot hit the cones or lines. The examiner watches from outside the vehicle. This tests your ability to control a large vehicle in tight spaces.

The third part is the road test, which lasts about 30 minutes. You drive on public roads while the examiner sits beside you. They watch how you accelerate, brake, turn, change lanes, and handle traffic. You must follow all traffic laws and show smooth, safe control of the vehicle.

You must pass all three parts on the same day to pass the skills test. If you fail any part, you can retake the entire skills test, but you must schedule a new appointment and pay the fee again. Most people pass on their first try if they have practiced with a professional trainer.

Cost and timeline for getting your CDL

The DPS charges a fee for each written test and a separate fee for the skills test. Written test fees and skills test fees vary slightly, so check the current DPS fee schedule on their website. You may also need to pay for your medical certificate (typically $100 to $200) and for professional training, which ranges from $3,000 to $7,000 depending on the school.

The timeline depends on how fast you move through each step. If you study for three weeks, pass all written tests on your first try, and schedule the skills test within two weeks, you could have your CDL in five to six weeks. If you need to retake a written test or wait for a skills test appointment, it can take eight to twelve weeks.

Many people attend a truck driving school before testing. A school provides the vehicle for the skills test, teaches you how to drive commercially, and helps you study for the written tests. School takes two to six weeks and costs more upfront but increases your chances of passing the skills test on the first try.

After you pass: getting your CDL card and keeping it valid

Once you pass the skills test, DPS issues your CDL. You receive a physical card in the mail within two weeks. Your CDL is valid for five years in Texas, after which you must renew it. You can renew online or in person, depending on whether anything has changed on your record.

To keep your CDL valid, you must renew your medical certificate every two years. If your medical certificate expires and you do not renew it, your CDL becomes invalid, and you cannot legally drive a commercial vehicle. Set a reminder six months before your certificate expires so you have time to schedule a new exam.

You must also follow all traffic laws. Moving violations, accidents, or safety violations can result in points on your CDL record. Too many points can lead to suspension or revocation. Some violations, like driving under the influence or leaving the scene of an accident, result in when ready disqualification from holding a CDL.

Endorsements: adding tanker, hazmat, or passenger to your CDL

An endorsement is a special permission added to your CDL that lets you haul specific cargo or passenger types. Texas offers four endorsements: Hazmat (hazardous materials), Tanker (liquid cargo), Passenger (buses or vans with more than 15 people), and Doubles/Triples (multiple trailers).

You can add an endorsement when you first get your CDL or later. To add an endorsement, you take the written test for that endorsement at a DPS office. Some endorsements, like Hazmat, also require a background check and fingerprinting through the Transportation Security Administration (TSA). The TSA process takes one to two weeks and costs about $85.

You do not need to take the skills test again to add an endorsement — only the written test. If you already have a CDL and want to add an endorsement, you can do so without retesting your driving ability.

Frequently Asked Questions

Can I get a CDL if I have a suspended or revoked license?

No. You must have a valid, unrestricted Texas driver's license before you can test for a CDL. If your license is suspended or revoked, you must wait until it is reinstated. Once it is valid again, you can begin the CDL process.

What happens if I fail the skills test?

You can retake the skills test, but you must schedule a new appointment and pay the fee again. You do not have to retake the written tests — those results stay on file. Many people pass on a second attempt after more practice with a trainer.

Do I need to attend a truck driving school to get a CDL?

No, but it is strongly recommended. A school provides the vehicle for your skills test, teaches you commercial driving techniques, and helps you study. Without a school, you must find your own vehicle and trainer, which is harder and more expensive.

How long is my medical certificate valid?

Your medical certificate is valid for two years from the date the doctor signs it. You must renew it before it expires to keep your CDL valid. If it expires, your CDL becomes invalid until you get a new certificate.

Can I add multiple endorsements at once?

Yes. You can take multiple endorsement tests on the same day at a DPS office. However, if one endorsement is Hazmat, you must complete the TSA background check before any Hazmat endorsement becomes active on your card.