Knowledge Test Class A #1
Class A Driving Test | Tennessee 2025 #1 Page 6 of 7
Train for FREE online with our Tennessee class A 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 TN CDL class A 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 A requirements may vary from state to state.
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36 . What is Gross Combination Weight?
Gross Combination Weight (GCW) is the total weight of a powered unit, its trailer(s), and the cargo being carried.
37 . The safety belt should:
When inspecting your vehicle, you should verify that the safety belt is securely mounted, adjusts, latches properly, and is not ripped or frayed.
38 . A broken exhaust system can:
Defects in an exhaust system are very dangerous because they can cause poisonous fumes to enter the cab or sleeper berth.
39 . If other vehicles are having a difficult time getting around your truck on a road with two or more lanes, you should:
You should stay in the right lane of a multilane road if your vehicle is being slowed down by a heavy load. Allow other vehicles to pass your truck using the left lane.
40 . If a vehicle is equipped with an Anti-Lock Braking System (ABS), when the vehicle is started:
After starting the engine of a vehicle equipped with an Anti-Lock Braking System (ABS), the indicator light should come on and then turn off. If the light stays on, something is wrong with the ABS.
41 . The two markings on a front brake limiting valve usually read:
Some vehicles with air brake systems manufactured before 1975 have a front brake limiting valve with "normal" and "slippery" settings.
42 . Air brakes are:
A tool to improve fuel efficiency.
