Texas CDL practice test

Getting a commercial driver's licence in Texas starts with the CDL knowledge tests. The content is federal: every state, Texas included, writes its tests from the FMCSA CDL manual, so the general knowledge test has 50 questions, the endorsement tests have 20 to 30, and the passing score is 80% on each. Texas Department of Public Safety administers the test; the rules behind it are published by the FMCSA. Try the free Texas CDL practice questions below, then pick a full test.

50general knowledge questions
80%passing score on every test
8knowledge tests covered
TXpick your state once in the app

Free Texas CDL practice quiz

Five questions from the general knowledge, air brakes and combination vehicles banks, the three tests most Texas Class A applicants take first. Tap an answer to see if you were right and read the explanation.

0 of 5 right0 of 5 answered

When backing a trailer, to make the trailer go left you should:
On the air lines between tractor and trailer, the emergency (supply) line and its glad hand are colored:
The trailer hand valve (trolley valve) should be used:
The tractor protection valve:
Pulling out the red eight-sided trailer air supply knob:

Every CDL test for Texas drivers

Each page has a free ten-question quiz, the real question count, the 80% pass mark and what the test covers.

How the Texas CDL knowledge test works

You take the general knowledge test first; it is required for every CDL class. Class A drivers add the combination vehicles test. Almost everyone takes the air brakes test, because skipping it puts an air brake restriction on the licence. Endorsements (hazmat, tanker, doubles/triples, passenger, school bus) each have their own knowledge test. Pass the tests and you hold a commercial learner's permit; the skills test in a truck comes later.

Fees, appointment rules and test centre locations are set by Texas; the current ones from Texas DPS are in the next section. What does not change is the content, and that is what PassRig drills.

Texas CDL fees and rules

In Texas the CDL is issued by the Texas Department of Public Safety. The figures below are taken from its own pages and were last checked on 2 November 2026. Fees and rules change, so confirm with the agency before you go.

Study from the state's own book: Texas CMV Driver's Handbook. PassRig's questions are written from the same FMCSA manual it is based on.

What	TX	Source
Learner's permit fee	$25, expires 180 days from issuance	dps.texas.gov
CDL fee	$97, expires in eight years	dps.texas.gov
Permit valid for	180 days or until your Texas driver licence expires, whichever is earliest	dps.texas.gov
Appointment	All in-office services by appointment only; book at txdpsscheduler.com	dps.texas.gov
Attempts allowed	Application void after three failed attempts or 90 days, whichever comes first	dps.texas.gov
Test languages	English only from 1 June 2026; Spanish knowledge tests no longer offered	dps.texas.gov
Medical certificate	Medical examiners submit certificate results electronically to DPS via the National Registry II	dps.texas.gov
Entry-level driver training	Training completion is verified electronically before the CDL skills test is given	dps.texas.gov
Also worth knowing	CLP can be renewed once, up to 30 days before expiry, without retaking the knowledge exams	dps.texas.gov

6 official pages from Texas DPS were read for this section. Nothing on it is estimated. Texas DPS's site is not reachable from outside the US, so these were read from archived copies of its pages captured on 2026-11-01.

Texas CDL test questions

How many questions are on the Texas CDL test?

The Texas CDL general knowledge test follows the federal model: 50 questions, 40 correct to pass. Endorsement tests are shorter: air brakes 25, hazmat 30, and combination vehicles, tanker, doubles/triples, passenger and school bus 20 each.

What is the passing score on the Texas CDL permit test?

80% on every knowledge test, the same pass mark used across the United States.

Where do I take the CDL knowledge test in Texas?

Texas Department of Public Safety gives the test. All in-office services by appointment only; book at txdpsscheduler.com The test content itself comes from the FMCSA CDL manual.

How much does a CDL permit cost in Texas?

Texas DPS lists the commercial learner's permit fee as $25, expires 180 days from issuance. Fees change, so check the agency's fee page before you go.

Does PassRig have Texas CDL practice questions?

Yes. Pick Texas in the app and you get practice sets and mock exams built from the knowledge test content your state uses, with the real counts and the 80% line.