Texas CDL Handbook: Endorsements, Tests, and Disqualifications

The Texas CDL handbook is the Texas Department of Public Safety’s official study guide for anyone applying for a commercial driver license, published as form DL-7C and available as a free PDF on the DPS Commercial Driver License page.1Department of Public Safety. Commercial Driver License It covers the general knowledge, vehicle systems, and endorsement material tested on the written exams, and it maps directly to both the Texas Transportation Code and the Federal Motor Carrier Safety Regulations. The digital copy is updated whenever the underlying rules change, which makes it more reliable than any printed version sitting on a shelf at a driver license office. DPS also posts instructional videos that walk through each portion of the skills exam, and they’re worth watching alongside your reading.2Department of Public Safety. Commercial Driver License (CDL) Instructional Videos

What the Handbook Covers by License Class

Which parts of the handbook you focus on depends on what you plan to drive. Texas issues three classes of commercial driver license, and your skills test must be performed in a vehicle matching the class you’re applying for.3Department of Public Safety. Classes of Driver Licenses

  • Class A covers any combination of vehicles with a gross combination weight rating of 26,001 pounds or more when the towed vehicle exceeds 10,000 pounds. This is the tractor-trailer license.
  • Class B covers any single vehicle weighing 26,001 pounds or more, including buses and straight trucks. A Class B holder can tow a trailer as long as the trailer does not exceed 10,000 pounds.
  • Class C covers vehicles below the Class A and B weight thresholds but designed to carry 16 to 23 passengers (including the driver) or to transport placarded hazardous materials.

You must be at least 18 to hold a Texas CDL, but that limits you to intrastate driving. Interstate commerce requires a minimum age of 21 under federal motor carrier rules.4Federal Motor Carrier Safety Administration. FAQs

Endorsements and Restrictions

The handbook has separate chapters for each endorsement, and you take a knowledge test for every endorsement you want on your license. Texas uses the standard federal codes:

  • H (Hazardous Materials) requires a knowledge test plus a TSA security threat assessment with fingerprinting and a background check. The TSA clearance can take up to 30 days, so start early.5Department of Public Safety. Hazardous Materials Endorsement (HME) for Commercial Driver License (CDL)
  • N (Tank Vehicle) covers vehicles designed to transport liquids or gases in bulk. Knowledge test only.
  • P (Passenger) is required for vehicles carrying 16 or more passengers and requires both a knowledge and skills test.
  • S (School Bus) requires a knowledge test, a skills test, and a separate background check, and you must already hold a P endorsement.
  • T (Double/Triple Trailers) is knowledge test only.
  • X combines the H and N endorsements for hazmat hauled in tank vehicles.6eCFR. 49 CFR 383.93 – Endorsement Testing Requirements

Restrictions work in the opposite direction: they limit what you can drive based on the vehicle you tested in. Fail the air brake portion of the knowledge test, or take your skills test in a vehicle without air brakes, and you’ll get a restriction barring you from operating any air-brake-equipped vehicle. Test in a vehicle with an automatic transmission and you’ll be restricted from driving manuals.7eCFR. 49 CFR 383.95 – Restrictions These appear on the face of your CDL and stay until you pass the relevant test component in the appropriate vehicle.8Department of Public Safety. Driver License Endorsements and Restrictions If your future employer runs trucks with manual transmissions and air brakes, test in that kind of vehicle the first time. Removing a restriction later means scheduling and paying for another skills test.

Requirements the Handbook Doesn’t Replace

Reading the handbook prepares you for the tests, but Texas requires several things alongside the study material before you can be licensed.

Entry-Level Driver Training

Before you can take most CDL tests, you must complete Entry-Level Driver Training through a school listed on the FMCSA’s Training Provider Registry. ELDT applies to anyone seeking a Class A or Class B CDL for the first time, upgrading from Class B to Class A, or adding a P, S, or H endorsement for the first time.9Federal Motor Carrier Safety Administration. Entry-Level Driver Training

ELDT has two components: theory instruction and behind-the-wheel training. Theory covers pre-trip inspections, cargo handling, hours-of-service rules, and hazard perception. There are no federally mandated minimum hours, but you must score at least 80 percent on written assessments to pass.10Federal Motor Carrier Safety Administration. ELDT Entry-Level Driver Training Minimum Federal Curricula Requirements Behind-the-wheel training includes both closed-course range exercises and public road driving. Simulators cannot substitute for either portion. Your provider submits your completion record to the Training Provider Registry within two business days, and you can verify it was submitted before scheduling your skills test.11Training Provider Registry. Training Provider Registry If DPS can’t confirm ELDT completion in the registry, you won’t be allowed to test.

Documents for Your Application

Show up at DPS missing any required document and you’ll be sent home. Bring:

  • Proof of identity and citizenship: an original birth certificate, valid U.S. passport, or permanent resident card. Photocopies are not accepted.
  • Two documents showing your current Texas address, such as utility bills or a mortgage statement dated within the past 90 days.
  • Your original Social Security card.
  • The correct self-certification form. Use CDL-4 if you’ll drive in interstate commerce, CDL-5 if only within Texas. The form tells DPS what category of commercial driving you’ll do and whether you need a medical certificate on file.12Department of Public Safety. Commercial Driver License (CDL) Medical Certification Requirement
  • For the skills exam: current registration and proof of insurance for the vehicle you’ll test in.

Medical Certification

Every commercial driver operating in non-excepted commerce must be medically certified as physically qualified.13eCFR. 49 CFR 391.41 – Physical Qualifications for Drivers The DOT physical has to come from a healthcare provider on the FMCSA’s National Registry of Certified Medical Examiners; a regular doctor who isn’t on the registry can’t perform it.14Federal Motor Carrier Safety Administration. National Registry of Certified Medical Examiners The exam covers vision, hearing, blood pressure, and physical and mental health conditions that could impair safe operation of a large vehicle. If you pass, the examiner issues a Medical Examiner’s Certificate (Form MCSA-5876) and submits the results electronically. The certificate is valid for up to two years depending on your health.

How the Tests Work

The path from application to license runs through three stages.

Written Knowledge Tests

You schedule an appointment at a DPS driver license office and take the written exams. Every applicant takes the general knowledge test, covering safe driving practices, vehicle inspection, cargo securement, and air brakes (unless you’re opting out of the air brake component). Each endorsement you’re adding has its own knowledge test. Passing these earns you a Commercial Learner Permit.15Department of Public Safety. How Do I Apply for a Commercial Driver License

Commercial Learner Permit

The CLP lets you practice on public roads, but only with a qualified CDL holder sitting in the front seat beside you.16Federal Motor Carrier Safety Administration. How Do I Get a Commercial Driver’s License? You must hold the CLP for at least 14 days before you’re eligible to take the skills test.17Department of Public Safety. Commercial Driver License (CDL) Frequently Asked Question

Skills Exam

The skills exam has three parts, and you must pass each before moving to the next:2Department of Public Safety. Commercial Driver License (CDL) Instructional Videos

  • Pre-trip vehicle inspection. You walk around the vehicle with the examiner and explain what you’re checking and why.
  • Basic vehicle control. Maneuvers in a controlled area, including straight-line backing, offset backing, and parallel parking.
  • On-road driving in real traffic, covering turns, lane changes, intersections, railroad crossings, highway merging, and grades.

After passing all three, you pay the $97 CDL fee and receive a temporary paper license.18Department of Public Safety. Driver License Fees The permanent card typically arrives by mail within two to three weeks.

Disqualifications Every CDL Holder Should Know

CDL holders are held to a stricter standard than regular drivers, and federal law divides disqualifying offenses into two categories.

Major Offenses

A single conviction while operating a commercial vehicle for any of the following results in a one-year disqualification from all commercial driving; a second conviction for any combination results in a lifetime disqualification:19eCFR. 49 CFR 383.51 – Disqualification of Drivers

  • Operating with a blood alcohol concentration of 0.04 percent or higher, or while under the influence of a controlled substance. The commercial BAC threshold is half the 0.08 percent limit for personal vehicles.
  • Refusing an alcohol or drug test required under state implied consent laws.
  • Leaving the scene of an accident.
  • Using a commercial vehicle to commit a felony.
  • Driving on a revoked, suspended, or canceled CDL.
  • Causing a fatality through negligent operation.

Using a commercial vehicle in the commission of a felony involving manufacturing, distributing, or dispensing a controlled substance triggers a lifetime disqualification on a first offense, with no eligibility for reinstatement.

Serious Traffic Violations

Serious violations carry escalating disqualification periods based on how many you accumulate within a three-year window. They include speeding 15 mph or more over the limit, reckless driving, improper lane changes, following too closely, texting while driving, and using a hand-held phone while operating a commercial vehicle. Driving a commercial vehicle without a valid CDL or without the correct endorsements also qualifies. Railroad crossing violations have their own escalation schedule and can produce a disqualification from a single offense.

Getting the Most Out of the Handbook

Read the handbook cover to cover at least once, then focus your review on the sections that match your license class and endorsements. Most people underestimate the general knowledge test, which pulls from vehicle systems, cargo rules, air brakes, and driving techniques all at once.

Pay special attention to the air brake chapter. Air brake questions trip up more test-takers than any other topic, and failing that section doesn’t just mean retaking the test. It means getting a restriction on your CDL that limits the vehicles you can legally drive.

For the skills exam, the pre-trip inspection is where many first-timers fail. Memorizing a walk-around checklist isn’t enough. The examiner expects you to explain what you’re looking for and why each component matters. Practice verbalizing your inspection out loud until it feels natural. The DPS instructional videos show exactly what the examiner expects to hear during each phase of the test.