Knowledge Test Class B #1
Class B Driving Test | Texas 2025 #1 Page 5 of 7
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 2025, 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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29 . If hydraulic brakes fail, a driver can reduce their speed by:
Letting the truck run out of gas.
If your hydraulic bakes fail, shifting into a lower gear can help slow your vehicle down.
30 . On trucks and buses, where are ABS malfunction lamps located?
Under the hood
Tractors, trucks, and buses with Anti-Lock Braking Systems (ABS) have yellow malfunction lamps located on their instrument panels. Trailers have yellow ABS malfunction lamps on their left side, either on the front or rear corner.
31 . Which of the following is an example of a serious traffic violation?
Traveling in a group of more than five CMVs
Serious traffic violations include excessive speeding (15 mph or more above the posted limit); reckless driving; improper or erratic lane changes; following a vehicle too closely; traffic offenses committed in a CMV in connection with fatal traffic accidents; driving a CMV without obtaining a CDL or having a CDL in the your possession; and driving a CMV without the proper CDL class and/or endorsements.
32 . The air entering air storage tanks may contain:
Antifreeze.
The air that enters air storage tanks in an air brake system usually contains a certain amount of water and compressor oil. Because accumulations of these materials can damage the braking system, tanks are equipped with drains to allow their removal.
33 . The parking brake should be:
Removed.
The parking brake in a vehicle with air brakes should be used every time the vehicle is parked.
34 . The air pressure in a dual air brake system should build from 85 to 100 psi within:
45 seconds.
When inspecting a vehicle with a dual air brake system, you should wait for air pressure to build from 85 to 100 psi in both the primary and secondary systems. This should take about 45 seconds.
35 . During the vehicle inspection test, you will be required to do all of the following, except:
Crawl under the vehicle.
As a part of earning your CDL, you will have to pass an inspection test and demonstrate that your vehicle is safe for operation. During the vehicle inspection test, you will have to walk around the vehicle and point to or touch each item and explain to the examiner what you are checking and why. You will not have to crawl under the hood or under the vehicle.
2025 Texas | Frequently Asked Questions
To acquire a CDL Tank endorsement in Texas, you must already have a Commercial Driver's License (CDL). Then, you need to pass the Tank Vehicle (N) endorsement knowledge test at your local Department of Public Safety (DPS) office. You should study the Texas CDL Handbook to prepare for this test.
Obtaining a CDL Tank license requires you to first have a Commercial Driver's License (CDL). You must then pass the Tank Vehicle (N) endorsement knowledge test. It's essential to study the related sections in the CDL Handbook before taking the test. You may also need to undergo a background check depending on the type of materials you will be transporting.
While Texas doesn't require specific training or experience for a CDL Tank endorsement, it's highly recommended to prepare for the Tank Vehicle (N) endorsement knowledge test. You can self-study using the Texas CDL Handbook. However, many choose to attend a training program to gain practical skills and knowledge, which could increase chances of passing the test.
Yes, to obtain a CDL Tank endorsement in Texas, you must pass the Tank Vehicle (N) endorsement knowledge test. This written test focuses on the handling and transportation of liquid cargo. The specific content and number of questions can vary, so it's best to prepare using resources like the Texas CDL Handbook.
The written test for the CDL Tank endorsement in Texas includes subjects such as inspecting and driving tank vehicles, safe driving practices, cargo handling and emergency procedures, and specific knowledge related to transporting liquids and gases.
The CDL Tank endorsement assessment primarily focuses on knowledge rather than specific maneuvers. You'll need to understand the inspection of tank vehicles, specifics of driving high center of gravity vehicles, safe driving practices, and how to handle emergencies. There's no specific skills test or road test for the Tank endorsement like there is for the basic CDL.
Drivers with a CDL Tank endorsement must adhere to all federal and state regulations related to transporting liquids. This includes weight limits, proper securing of cargo, and handling of hazardous materials if applicable. Furthermore, they may be subject to more frequent inspections. Violations can result in fines, CDL suspension or revocation.
No, it's illegal to transport liquid or gas materials in a tank vehicle without a valid CDL Tank endorsement. This rule applies to vehicles designed to transport 1,000 gallons or more. Violation can result in hefty fines, legal penalties, and potential suspension or revocation of your CDL. Always ensure your endorsements are up-to-date before transporting such materials.
The CDL Tank endorsement can be added to your current Commercial Driver's License (CDL). You don't need to apply for a new CDL. However, you will need to pass the Tank Vehicle endorsement knowledge test. Once you pass the test, your CDL will be updated with the Tank endorsement.
Yes, there are specific regulations and prerequisites for handling hazardous materials with a CDL Tank endorsement in Texas. These include obtaining a hazardous materials endorsement, passing a background check, completing specialized training, and adhering to strict safety protocols when transporting, loading, and unloading hazardous materials.