Knowledge Test Class B #1
Class B Driving Test | Texas 2026 #1
Train for FREE online with our Texas class B license test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a TX CDL class B permit in 2026, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that CDL class B requirements may vary from state to state.
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1 . If another driver is following you too closely, you should do all of the following, except:
Avoid relying on tricks to help others pass.
If you are being followed too closely, you should increase your following distance, avoid making quick moves, and avoid relying on tricks (such as flashing your lights) to help other drivers pass. Speeding up may only increase the danger by causing the tailgater to continue tailgating you at a higher speed.
2 . After starting the engine, oil pressure should reach a normal level:
Within 10 minutes of driving.
After you start the engine, keep an eye on the gauges. Oil pressure should rise to a normal level within a few seconds of the engine being started.
3 . If approaching a railroad crossing while driving a placarded vehicle, you should always:
Change lanes while on the tracks.
If approaching a railroad crossing while driving a transit bus, school bus, or placarded vehicle, special procedures apply. Before crossing, stop your vehicle within 50 feet of, but not less than 15 feet from, the nearest rail. Activate your four-way flashers while crossing. Do not stop, change gears, or change lanes while any part of your vehicle is proceeding across the tracks.
4 . What do anti-lock brakes do?
Prevent a vehicle from accelerating while traveling downhill
The function of an Anti-Lock Braking System (ABS) is to prevent the vehicle's wheels from locking up from hard brake application.
5 . On a truck with air brakes, the braking system’s air compressor:
Cleans the brakes.
In an air brake system, the air compressor pumps air into the air storage tanks. The air compressor is controlled by the air compressor governor.
6 . To inspect slack adjusters on S-cam brakes, you need to:
Chock the wheels and disengage the parking brake.
Check each slack adjuster after parking on level ground, setting wheel chocks, and disengaging the parking brake. Pull the slack adjusters to make sure they do not move more than about one inch from where the push rod is attached. If they move more than one inch, they may be out of adjustment and will need to be fixed.
7 . When driving:
You may read texts that have fewer than 30 words.
Using a phone while driving is a dangerous distraction. When operating a CMV, you are not allowed to read or send text messages.
See the exact questions that will be on the 2026 Texas DMV exam.
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2026 Texas | Frequently Asked Questions
A CDL Class B license in Texas allows the holder to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or any such vehicle towing another not exceeding 10,000 pounds. This includes buses, farm labor vehicles, and any combination of vehicles that are not Class A vehicles.
A Class B CDL license in Texas allows the holder to operate vehicles such as straight trucks, large buses, segmented buses, box trucks, dump trucks with small trailers, and tractor-trailers. However, it is important to note that any trailer being towed must not exceed a gross vehicle weight rating of 10,000 pounds.
To acquire a Class B CDL license in Texas, applicants must be at least 18 years old (21 for interstate driving), possess a valid Texas driver's license, pass a vision exam, and successfully complete a knowledge test. They must also pass a skills test, which includes a pre-trip vehicle inspection, a basic vehicle control test, and an on-road driving examination.
In Texas, you must be at least 18 years old to qualify for a Class B Commercial Driver's License (CDL) for intrastate driving (within Texas only). However, if you intend to drive across state lines (interstate driving), federal regulations require you to be at least 21 years old.
While not always necessary, specific endorsements can be added to a Class B CDL license in Texas to allow for the operation of special types of vehicles. These include passenger (P), school bus (S), and tanker (N) endorsements. Each endorsement requires additional knowledge tests, and some also require a skills test.
The Class B CDL skills assessment in Texas includes three parts: a pre-trip vehicle inspection to check your understanding of your vehicle and its operation, a basic controls test to assess your ability to control the vehicle, and a road test to evaluate your on-road driving skills in various traffic situations and environments.
Yes, there are limitations for Class B CDL license holders in Texas. They are permitted to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or tow a vehicle not exceeding 10,000 pounds GVWR. However, they cannot operate Class A vehicles unless they upgrade their license.
In Texas, the written Class B CDL test is primarily offered in English. However, Spanish versions are available. Please note that all CDL applicants must pass an English proficiency test, as federal regulations require all CDL holders to read and speak English sufficiently to communicate with the general public, understand highway traffic signs and signals, and respond to official inquiries.
Yes, the Texas Department of Public Safety (DPS) provides reasonable accommodations for individuals with disabilities during the Class B CDL written exam. You need to request these accommodations in advance. Contact your local DPS office for more information about the process and to discuss your specific needs.
Yes, if you don't pass the Class B CDL written test in Texas, you can retake it. However, you will need to wait at least one day before retesting. Keep in mind that additional fees may apply each time you retake the test. It's recommended to study thoroughly and use available practice tests to increase your chances of passing on the next attempt.
