Knowledge Test Class B #1
Class B Driving Test | Texas 2026 #1 Page 6 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 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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36 . When crossing railroad tracks, you should:
Stay in your lane.
When crossing railroad tracks during the on-road driving skills test, you must not stop, switch gears, pass another vehicle, or change lanes while any part of your vehicle is in the crossing.
37 . When asked to make a lane change during the skills test, you should:
Not make the lane change if you don’t want to.
You will be asked to make multiple lane changes during the driving skills test. Before changing lanes, you should make the necessary traffic checks and use proper signals. Change lanes smoothly when you can do so safely.
38 . When parked on the side of the road, you should:
Use your four-way flashers.
Always turn on your four-way emergency flashers if you must park on the side of the road. This is especially important when traveling at night.
39 . When entering traffic on an expressway during the skills test, you should:
Cut off other drivers if needed.
During the on-road driving skills test, you may be asked to enter an expressway. Before doing so, you must check traffic, use proper signals, and merge smoothly into the proper lane.
40 . What can happen if your vehicle has a high center of gravity?
The tires may not be able to handle the weight.
The height of a vehicle's center of gravity is very important. A high center of gravity (cargo piled up high or heavy cargo on the top of a load) increases the possibility of your vehicle tipping over.
41 . Why do you need to drain air tanks regularly?
To remove bad air from the tanks
Compressed air in an air brake system usually contains a certain amount of water and compressor oil. The water and oil can damage the brakes if left to accumulate in the system. Tanks must be drained regularly to remove this build-up.
42 . The two indicators that determine when you should upshift are:
Oil pressure and air brake pressure.
There are two indicators that determine when you need to shift into a higher gear. One indicator is the engine speed (rpm). You should read your vehicle's manual to learn its rpm range and shift up when you reach the top of that range. The other indicator is road speed (mph). You should learn which speeds each gear can accommodate, then keep an eye on the speedometer and shift up as needed.
2026 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.