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California CDL DMV Endorsement Double 1

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

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1. If a trailer is not at the proper height during coupling:
It will not make a difference when coupling.
Coupling will be more secure.
It may not couple correctly.

Before coupling together a tractor and a trailer, you should make sure the trailer is at the proper height. If the trailer is too low, the trailer nose may be damaged. If the trailer is too high, it may not be able to couple correctly.

2. While driving, a driver should:
Not be concerned with what is happening on the sides of their vehicle.
Be concerned with what is happening on all sides of the vehicle.
Not be concerned with what is happening behind the vehicle.

It is essential that you are aware of what is happening on all sides of your vehicle at all times. Scan the road ahead and make regular checks of the mirrors on both sides of your vehicle while you are driving.

3. What should you do if your vehicle gets stuck on railroad tracks?
Stay in the vehicle.
Get out of the vehicle and call for assistance.
Continue trying to get your vehicle off the tracks until you are successful.

If your CMV gets stuck on railroad tracks, you should immediately leave the vehicle and get away from the tracks. Check the signposts or signal housing at the crossing for emergency contact information and call 911, or another appropriate emergency number.

4. Which of the following is not a type of distraction?

Distractions that can affect safe driving can be classified as physical (such as reaching for an object), mental (such as talking with passenger), or both (such as talking on a hand-held phone).

5. After finishing a pre-trip inspection, you should:
Leave the rear shut-off valves open.
Remove the service line valve.
Close the emergency line valve.

Before a trip, you should ensure that air reaches all air brakes on all trailers by opening up the rear emergency line and service line shut-off valves to listen for escaping air. Close both shut-off valves before beginning to drive.

6. Rolling backward when beginning to accelerate is dangerous because:
The transmission may be damaged.
The truck is not made to go backwards.
You may hit a vehicle behind you.

Be sure that you are able to accelerate without first rolling back. Rolling backwards may cause you to collide with a vehicle or other obstacle behind your truck.

7. Test the tractor protection valve by:
Removing the air supply knob.
Removing the parking brake control knob.
Releasing air with the brake pedal.
Releasing air with the gas pedal.

You should test the tractor protection valve by allowing the air supply to properly charge, turning off the engine, then releasing air from the system by pressing the brake pedal several times. The tractor protection valve should move into its emergency position when psi drops to an unsafe level.

8. 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.

9. When starting an engine:
The brakes will lock up.
Warning lights should turn on, then quickly turn off.
Coolant temperatures should decrease.

After a vehicle is started, the warning lights and buzzers should go out after a few seconds. If the warning signals do not turn off, there may be something wrong with the vehicle.

10. Rust around wheel nuts may mean:
It rained recently.
The nuts are loose.
The nuts are too tight.

It is important to inspect your tires before every drive. Rust around wheel nuts may indicate that they are loose.

11. If you are braking on dry pavement while traveling at 55 mph, how much distance will brake lag add to your overall stopping distance?
32 feet
45 feet
20 feet

The total stopping distance for vehicles equipped with air brakes is made up of four factors: perception distance, reaction distance, brake lag distance, and braking distance. When braking at a speed of 55 mph while driving on dry pavement, the brake lag can add around 32 feet to the vehicle's total stopping distance.

12. 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.

13. When visually checking a coupling device, you should:
Look for mud on the fifth wheel.
Make sure the kingpin is polished.
Make sure there is a space between the upper and lower fifth wheel.
Make sure the locking jaws are closed on the kingpin.

When performing a visual check of coupling devices, you should make sure there is no space between the upper and lower fifth wheel. Ensure that the locking jaws are securely closed around the shank of the kingpin.

14. How do ice cream trucks become hazardous to other drivers?
Ice cream trucks must be kept cold.
Children often run toward an ice cream truck without looking for other traffic.
Ice cream trucks leave trails of water and ice on the roadway.

Ice cream trucks can create hazardous conditions for other drivers because they attract children. Children often do not notice or pay attention to other vehicles on the roadway when running to or from ice cream trucks.

15. Regrooved tires are:
Allowed only on the front of a bus.
Allowed only on the rear of a bus.
Not allowed anywhere on a bus.

Regrooved, recapped, or retreaded tires are not permitted to be used on the front of a bus.

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