Tank Endorsement Test | Oklahoma 2025 #2 Page 2 of 3
Train for FREE with our Oklahoma tank endorsement practice test online. 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 OK tank license 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 DMV requirements for issuing a CDL tank vehicle endorsement may vary from state to state.
8 . When changing lanes:
Always use your turn signals and check your mirrors when changing lanes.
9 . If you must stop on the side of a one-way or divided highway, how far behind your vehicle should you place warning devices?
If you must stop on or by a one-way or divided highway, you must place a warning device 10 feet, 100 feet, and 200 feet to the rear of your vehicle.
10 . Before beginning to drive downhill, you should:
To avoid overusing your brakes, you should always shift into a lower gear before starting down a hill.
11 . What is a tractor protection valve?
A tractor protection valve keeps air in a tractor or truck air brake system should the trailer break away or develop a bad leak. The valve will close automatically if the pressure drops to an unsafe level.
12 . When leaving your vehicle:
Parking brakes should be used whenever you park. If necessary, chock your wheels.
13 . What does an Anti-Lock Braking System (ABS) do?
An Anti-Lock Braking System (ABS) helps prevent wheel lockup during hard braking. If ABS detects impending lockup, it reduces braking pressure to a safe level.
14 . If a shipping paper describes both hazardous and non-hazardous materials:
If a shipping paper lists both hazardous and non-hazardous materials, the hazardous materials must be entered first.
See the exact questions that will be on the 2025 Oklahoma DMV exam.
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