Knowledge Test Class B #1
Class B Driving Test | Texas 2025 #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 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.
50
40
22
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.
