After a tire has been changed, you should stop a short while later to recheck the tightness of the lug nuts.

Stop to make sure the lug nuts are still tight.

Always use your turn signals and check your mirrors when changing lanes.

You should not use your mirrors.

You should not use your turn signals.

If you remain in neutral for too long while switching gears, you may have difficulty putting the vehicle into the next gear. If this happens, do not try to force the gear shift. Instead, return to neutral, release the clutch, increase the engine speed to match the road speed, and try again.

You may have trouble putting the vehicle into the next gear.

If a shipping paper lists both hazardous and non-hazardous materials, the hazardous materials must be entered first.

The hazardous materials must be listed first.

The hazardous materials must be written larger.

The hazardous materials must be listed in red ink.

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.

A valve to keep air in the brake system should there be a bad leak

A valve that prevents a truck from being stolen

A valve that prevents the driver from driving too fast

Tank Endorsement Test | Oklahoma 2024 #1 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 2024, 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.

Number of Question 20

Passing Score 16

Number of Tests 20

Tank Endorsement Test | Oklahoma 2024 #1 Page 2 of 3

8 . Before entering a curve, you should:

9 . Shortly after a tire has been changed, you should:

10 . When changing lanes:

11 . If you remain in neutral for too long while switching gears:

12 . If you identify a distracted driver on the road, you should:

13 . If a shipping paper describes both hazardous and non-hazardous materials:

14 . What is a tractor protection valve?

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