Louisiana CDL DMV Endorsement Double 2

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

Number of Test

Number of Question

Passing score

13%

0Correct
0Incorrect

Not enough to pass :-(

Ouch! While you were on a roll there for a few questions, you didn’t pass this time. But I know this test, and I think you’ll pass next time. Really.

1. 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.

2. If there is a cargo fire in a box trailer:

The trailer doors should be opened.

The trailer doors should not be opened.

A large, heavy blanket should be put over the trailer.

The doors of a trailer should be not be opened in the event of a cargo fire, especially if the cargo includes hazardous materials. Opening trailer doors would increase the fire's oxygen supply, potentially causing the fire to increase in size.

3. When driving in fog, you should:

Slow down.

Speed up.

Drive on the shoulder.

It is best not to avoid driving in fog. However, if you must drive under foggy conditions, be sure to decrease your speed.

4. One way to prevent drowsiness while driving is to:

Drive alone.

Avoid regular exercise.

Get adequate sleep the night before the trip.

Driving while fatigued can be extremely dangerous. Strategies for preventing drowsiness while driving include getting a full night's sleep before a trip; having someone ride with you; scheduling trips for times during which you are normally awake; and avoiding medications that may cause drowsiness. Exercising regularly can increase your energy levels and make you less likely to become tired while driving.

5. When coupling together two trailers, you can secure the second trailer by:

Detaching the emergency line.

Setting wheel chocks.

Placing it at the base of a hill.

If you are attaching a second trailer to a combination, but you have doubts about the trailer's brakes, you should use wheel chocks to secure the trailer in place while coupling.

6. When using your turn signal, you should:

Signal before beginning the turn.

Turn the signal off before beginning the turn.

Signal only if vehicles are in front of you.

Always begin signaling well in advance of a turn. This is the best way to ensure that other drivers do not try to pass you. Without using a turn signal, drivers may assume that you are merely slowing down or stopping when you are planning to turn.

7. How can you tell if a converter dolly is equipped with anti-lock brakes?

The dolly is marked with a sticker displaying the letters "ABS."

There is a plaque on the side of the dolly containing the information.

There is a yellow lamp on the left side of the dolly.

Converter dollies built on or after March 1, 1998 are required to have Anti-Lock Braking Systems (ABS). The presence of ABS will be indicated by a yellow lamp on the left side of the dolly.

8. The leading factor resulting in death and injury in work zones is:

Speeding.

Stopping.

Under-inflated tires.

The leading cause of injury and death in roadway work zones is excessive speed by passing drivers. Lower your speed when driving through a work zone.

9. Which of the following is acceptable if found during a pre-trip inspection?

Tires of mismatched sizes

Tread of 3/32 of an inch in the grooves of the front tires

Tires manufactured by different makers

When checking the tires as part of a pre-trip inspection, make sure the tires have sufficient tread. There should be at least 4/32 of an inch of tread in every major groove of the front tires, and at least 2/32 of an inch of tread depth on the other tires. Tire sizes should not be mismatched.

10. Why do large vehicles use air brakes?

Other brake systems squeak too loudly.

Air brakes are very effective systems.

Other braking systems are hard to come by.

If used and maintained properly, air brakes are a safe and effective way to stop large, heavy vehicles.

11. Alcohol evaporators are:

Illegal.

Used to add alcohol to braking systems to prevent items from freezing.

Only allowed on vehicles carrying hazardous materials.

Some air brake systems include an alcohol evaporator. The evaporator introduces alcohol into the braking system to prevent the formation of ice, which can cause damage.

12. Rust around wheel nuts may mean:

It recently rained.

The nuts are loose.

The tire is not clean.

Rust around wheel nuts can indicate that the nuts are loose. If you find rust near the wheel nuts, check their tightness before beginning to drive.

13. Mirror adjustment can only be checked properly if:

The trailer is straight.

There is no trailer.

The vehicle is on a slight incline.

On a vehicle with one or more trailers, mirror adjustment can only be checked accurately if the trailers are straight. Mirror adjustment should be checked before the start of every trip.

14. Before attempting to put out an engine fire:

The hood should be opened.

The engine should be turned off.

The accelerator should be depressed to use up the remaining fuel.

If you experience an engine fire, you should turn off the engine as soon as safely possible. Avoid opening the vehicle's hood when extinguishing the fire.

15. What is the best way to stop if your brakes fail while you are driving downhill?

Steer onto an escape ramp.

Let the vehicle slow down on its own.

Let rumble strips slow your vehicle.

If your brakes fail on a downgrade, you will need to quickly find something outside that can stop your vehicle. An escape ramp is the best option. If no escape ramp is available, use the least hazardous available option, such as driving into an open field or side road that flattens out or turns uphill.

16. One way to avoid becoming an aggressive driver is to:

Talk on your cell phone while driving.

Question others' driving abilities.

Set realistic expectations regarding travel time.

To help avoid frustration, which can lead to aggressive driving behavior, you should begin a trip with realistic expectations about your travel time. Plan ahead to allow time for potential traffic delays. Other strategies to help prevent aggressive driving behavior include driving an appropriate speed and keeping a reasonable following distance; avoiding making gestures at other drivers; and keeping your hands on the steering wheel.

17. When approaching a railroad crossing, you should:

Rely on warning signals to indicate if a train is approaching.

Rely on the actions of other motorists to indicate if a train is approaching.

Not rely solely on warning signals to indicate if a train is approaching.

You should not rely solely upon the presence of warning signals, gates, or flaggers to alert you to the approach of a train. Be especially alert to approaching trains at crossings that are not controlled by gates or signals. At any railroad crossing, you should operate under the assumption that a train is coming.

18. When coming to a stop, you should apply the brake pedal by:

Pushing down gradually.

Pushing down quickly.

Pulling up gradually.

When stopping, you should push the brake pedal down gradually. Braking gradually will help you to maintain proper control of your vehicle.

19. Which of the following is not a reason to use your mirrors?

You are changing lanes.

You are making a turn.

You are looking at fuel prices.

While regular mirror checks should be part of your normal driving routine, checking your mirrors is especially important when turning, changing lanes, merging, and performing tight maneuvers.

20. Rust around wheel nuts may mean:

It has rained recently.

The nuts could be loose.

The tires should be replaced.

Rust around wheel nuts may mean that they are loose. Check the tightness of the nuts if you see any rust in the area.

Try more CDL Louisiana Practice Test

Your Progress

0Incorrect (4 allowed to pass)
0Correct