How Many Questions are on the CDL Permit Test? (2026 State Breakdown & Passing Scores)

You have studied the manual. You have watched the videos. You have your medical card in hand. Now, you are standing in line at the DMV, and a wave of anxiety hits you.

How long is this going to take? How many questions do I actually have to answer?

It sounds like a simple question, but the answer determines your testing strategy. If you don't know how many questions are on the CDL permit test, you can't pace yourself. You might rush through the easy ones and make silly mistakes, or panic when the test doesn't seem to end.

Here is the reality: The "CDL Test" isn't just one big exam. It is a series of separate tests. Depending on whether you want a Class A or Class B license, the number of questions changes.

This guide is your 2026 cheat sheet. We will break down the exact question counts, the "80% Rule" for passing, and the specific numbers for every endorsement.

The Standard Breakdown: Class A vs. Class B

The Federal Motor Carrier Safety Administration (FMCSA) sets the standards (AAMVA model), so the question counts are remarkably consistent across 98% of the United States.

When you sit down at the computer, you won't take one 95-question test. You will take three separate tests. You can pass one and fail another; they are graded individually.

1. The Class A Permit Test (The Big Rig)

To drive a tractor-trailer, you need to pass three sections. Here is the math:

• General Knowledge: 50 Questions
• Air Brakes: 25 Questions
• Combination Vehicles: 20 Questions
• Total Questions: 95 Questions

You do not have to take them all in one day, but most people do.

2. The Class B Permit Test (Dump Trucks/Buses)

Since Class B vehicles typically don't pull a trailer, you skip the "Combination" section.

• General Knowledge: 50 Questions
• Air Brakes: 25 Questions
• Total Questions: 75 Questions

Note: If you plan to drive a non-air brake vehicle (like a smaller delivery box truck), you can skip the Air Brakes test, but you will be saddled with an "L" Restriction (No Air Brakes), which makes you unemployable to most major fleets. Just take the Air Brakes test.

The "80% Rule": How Many Can You Miss?

This is the most common question we get: "What is the passing score?"

Across the board, the passing score is 80%.

However, doing the math in your head while stressed at a DMV kiosk is hard. We have done it for you. Here is your "Survival Threshold" cheat sheet. Memorize these numbers.

The "Sudden Death" Feature: Most DMV computers use a specialized testing software. The test will automatically stop the moment you pass or fail.

• Good Scenario: On the General Knowledge test, if you get the first 40 questions correct in a row, the screen will flash "PASS" and the test ends. You don't have to answer the last 10.
• Bad Scenario: If you get 11 questions wrong, the screen goes red, says "FAIL," and kicks you out.

Endorsement Question Counts

If you are ambitious and want to maximize your salary, you will want endorsements. You should know how many questions are on the CDL permit test for these add-ons, because they add to your total fatigue for the day.

The "Big Money" Endorsements

• Hazardous Materials (H): 30 Questions. This is the longest endorsement test. It is text-heavy and tricky. You can miss 6.
• Tanker (N): 20 Questions. Relatively short. Focuses on surge, baffles, and outage. You can miss 4.
• Doubles/Triples (T): 20 Questions. Focuses on coupling the rear trailer and the "crack the whip" effect. You can miss 4.

The Passenger Endorsements

• Passenger (P): 20 Questions.
• School Bus (S): 20 Questions. (Note: You usually must pass the 'P' test before the 'S' test).

State Exceptions: Is Your State Different?

While the AAMVA model is standard, America is a big place. Some states have quirks that change how many questions are on the CDL permit test.

Texas: The "Special Requirements" Curveball

Texas is the most notable exception. If you are applying for a Class A permit in Texas, you must take the "Texas Commercial Rules" (often called Section 14 or Special Requirements) test.

• Question Count: 20 Questions.
• Topic: Unique Texas laws regarding lighting, farm exemptions, and height requirements.
• Impact: This means a Texas Class A driver takes 4 tests (General, Air, Combo, Special), totaling 115 questions.

Alabama & Others

Some states may shorten the Air Brakes section to 20 questions instead of 25, or combine certain elements. Always check your specific state's CDL manual index, but prepare for the standard numbers listed above. If you prepare for 25 questions and only get 20, you are over-prepared, which is a good place to be.

The "Skip Button" Strategy

Knowing the question count allows you to use the most powerful tool on the screen: The Skip Button.

In almost every state, the testing software allows you to skip a question without it counting as wrong. The question simply goes to the back of the queue.

Why is this important? Remember, you only need to get 40 correct on the General Knowledge test. Let's say you encounter 3 incredibly hard questions about suspension systems early in the test.

• Rookie Move: Guess. If you get them wrong, you have burned 3 of your 10 allowed "lives."
• Pro Move: Skip them.

If you skip the hard ones and answer all the easy ones correctly, you might hit 40 correct answers before those hard questions ever cycle back around. The test will end, and you will pass without ever having to guess on the topics you didn't know.

Time Limits: Do You Need to Rush?

Another common fear is running out of time.

• The Reality: Most states give you 60 to 90 minutes for the General Knowledge section, and 30 to 45 minutes for the smaller sections.
• The Math: For a 50-question test, 60 minutes means you have over a minute per question. Most questions can be answered in 15 seconds.

Do not rush. Read every question twice. One word like "not" or "always" can change the entire meaning. You have plenty of time.

Conclusion

So, how many questions are on the CDL permit test? For the standard Class A permit, aim for 95 questions.

It sounds like a lot, but you don't have to eat the whole elephant in one bite. Break it down.

1. Study specifically for General Knowledge (50 questions).
2. Study specifically for Air Brakes (25 questions).
3. Study specifically for Combination Vehicles (20 questions).

Don't let the number scare you. Thousands of people pass this test every week. If you use the Skip button wisely and memorize your "Cheat Sheet" numbers, you will walk out of the DMV with a paper permit in your hand, ready to start your career.

Ready to start practicing? Don't waste time on easy questions. Challenge yourself with our General Knowledge Practice Test and see if you can hit that magic 40/50 score.

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