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Missouri CDL DMV Endorsement Tank 1

Take 10 practice tests for CDL is the best way to prepare for your Missouri DMV exam is by taking our free practice tests. The following question are from real Missouri DMV practice test. More than 95% people pass a DMV exam when practice at DMV Practice Test.

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1. Emergency equipment, such as fire extinguishers, are:
Only needed in vehicles transporting hazardous materials.
Only needed for interstate travel.
Required in all commercial motor vehicles.

All commercial motor vehicles must carry appropriate emergency equipment, including fire extinguishers.

2. When backing a trailer, you must turn the steering wheel:
In the direction you want the trailer to move.
In the direction opposite of where you want the trailer to move.
To the left until backing is complete.

When backing a vehicle with a trailer, you must turn the steering wheel in the direction opposite of where you want to go. Once your trailer starts to turn, you should turn the steering wheel the other way to follow the trailer.

3. A broken exhaust system:
Can allow poisonous fumes to enter the cabin.
Does not cause problems.
Should not be a concern.

A broken exhaust system can let poisonous fumes into a vehicle's cab or sleeper berth. Be sure to inspect your exhaust system for any loose, broken, or missing parts.

4. An improperly placarded vehicle:
May never be moved.
May only be moved in an emergency.
May be driven if the cargo is not radioactive.

A vehicle that lacks the proper placards for any hazardous materials on board may not be driven, except as necessary to protect life and property in an emergency.

5. In a double or triple combination, the ____ trailer should be directly behind the cab.

When positioning trailers in a combination, the most heavily-loaded trailer should be the closest to the tractor. The lightest trailer should be positioned in the rear.

6. When conducting a check of the engine compartment during a vehicle inspection, you should not:
Check the engine oil level.
Check the coolant level.
Drain the brake fluid.

When inspecting the engine compartment, you should check the oil level, coolant level, and windshield washer fluid level, among other things.

7. More than half of all accident-related truck driver deaths are caused by:
Slippery roads.
Other drivers.

More than half of all accident-related truck driver deaths are a result of truck rollovers. To help prevent a rollover, be sure to load cargo low to the ground and centered on your rig. Take corners slowly and carefully.

8. Rough acceleration:
Is recommended.
Can cause mechanical damage.
Is required on slippery surfaces.

Always speed up smoothly and gradually so that your vehicle does not jerk. Rough acceleration can cause mechanical damage.

9. In cool weather, as the temperature begins to rise and ice begins to melt:
It is usually safe to drive.
The road will become even more slippery.
Traction will increase.

As the temperature begins to rise and ice on the road begins to melt, the road surface will often become even more slippery. Water from the slight melting will sit on top of the ice, decreasing the available traction even more. Always decrease your speed and drive with caution when traveling on slippery surfaces.

10. What is the Johnson bar?
A hand valve that works the trailer brakes
A valve that indicates the fuel level
A valve that limits the amount of cargo

The trailer hand valve, also called the trolley valve or Johnson bar, is used to work the trailer brakes. It should be used only to test the brakes. Using it while a vehicle is in motion could cause a skid.

11. As part of the vehicle inspection test, a CDL applicant may be asked to:
Check the engine oil level.
Replace a tire.
Remove the alternator belt.

When checking the engine compartment during the vehicle inspection test, you will need to check the engine oil level.

12. Shaded areas of a road:
Usually don’t freeze.
Are usually blocked from all moisture, so they cannot freeze.
Will remain slick after ice has melted on other areas of the road.

Because they are exposed to less sunlight and warm up more slowly, shaded areas will remain icy and slippery after ice on other areas of the road has melted.

13. On any upgrade, gravity will:
Speed your vehicle up.
Slow your vehicle down.
Not impact your speed.

A vehicle will be slowed down by gravity on any uphill grade. You may need to switch to a lower gear to climb a steep grade.

14. How many daily hours of sleep does an adult need to maintain alertness?
Six to seven
Seven to eight
Eight to nine

Being properly rested is essential to the safe operation of a CMV. To maintain alertness, most people need eight to nine hours of sleep per night.

15. Lower the risk of jackknifing by:
Making sharp turns.
Braking abruptly.
Accelerating smoothly.

You can prevent skidding by steering, accelerating, and braking smoothly. If your drive wheels or trailer wheels begin to skid while you are driving a tank vehicle, the vehicle could jackknife.

16. You should not use your mirrors:
When changing lanes.
When making a turn.
To determine how fast you are traveling.

While regular mirror checks should be a part of your driving routine, it is particularly important to check your mirrors when changing lanes, turning, merging, and making tight maneuvers.

17. If feeling tired while driving, it is best to:
Take a pep pill.
Get some rest.
Continue driving.

If you begin to feel tired while driving, the only safe action to take is to stop and get some sleep. Trying to fight the fatigue and press on is very dangerous and can result in a fatal crash. You should not rely on artificial stimulants; these may help keep you awake a while longer, but they won't make you more alert.

18. If an aggressive driver is involved in a crash on the road ahead, you should:
Stop and confront the driver.
Stop a safe distance from the crash scene, wait for police to arrive, and tell them of the driver's behavior.
Block the driver in with your vehicle.

If you see a crash involving an aggressive driver, you should stop a safe distance from the crash scene, wait for police to arrive, and inform them of the aggressive behavior you witnessed.

19. Rearward amplification refers to:
The amount of noise projected to the rear of a vehicle.
The cause of the "crack-the-whip" effect.
The number of trailers that can be pulled by a tractor.

Vehicles with trailers are vulnerable to rollover due to the "crack-the-whip" effect, which is caused by rearward amplification.

20. Before operating a tank, a driver should:
Remove the rear shut-off valve.
Check vapor recovery kits, if applicable.
Remove a third of their fuel.

When inspecting your tank vehicle before operation, make sure all specialty equipment is in safe working condition. This includes vapor recovery kits, grounding and bonding cables, and emergency shut-off systems.

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