22 Tests

CDL Class B Driving Test Online | Texas 2021

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 2021, practice as much as.. Read More

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 2021, 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.

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