Over 95% pass rate when practice at DMV Practice Test

Indiana CDL DMV Endorsement Double 1

Take 10 practice tests for CDL is the best way to prepare for your Indiana DMV exam is by taking our free practice tests. The following question are from real Indiana 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
  • 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. How does doubling your speed from 20 mph to 40 mph affect your vehicle's braking distance?
It stays about the same.
It increases slightly.
It doubles.
It quadruples.

Increasing your vehicle's speed will increase your vehicle's striking power and braking distance. Doubling your vehicle's speed from 20 to 40 mph will multiply its braking distance by four.

2. Rollovers happen when:
A truck driver is driving too fast.
The driver of a vehicle in front of a truck is moving to slowly.
A truck driver is driving too slowly.
ABS is working effectively.

Rollovers happen when a vehicle is driven too fast. To reduce the risk of rollover, make sure the weight of cargo is loaded low to the ground, and that you take turns and curves slowly.

3. What is the minimum permitted size of a placard?
Four square inches
Seven square inches
10 ¾ square inches
32 square inches

Hazardous materials must be diamond-shaped and a size of at least 10 ¾ square inches.

4. Air tank drains:
Allow rain water to enter the tank.
Are used to drain water and compressor oil from the air tank.
Should never be opened.
Must remain open during transit.

In an air brake system, the air storage tanks must be drained to remove accumulated water and compressor oil. Failing to do so can cause damage. Manually operated drains should be used at the end of each day of driving.

5. When other vehicles have trouble seeing you at dawn or dusk, you can increase your visibility by:
Turning on your four-way flashers.
Honking your horn.
Turning on your headlights.
Turning on your windshield wipers.

At dawn or dusk, and in snowy or rainy conditions, you should turn on your headlights to make it easier for other road users to see your vehicle.

6. To confirm that a trailer has ABS, you can:
Look under the trailer for wheel speed sensors coming from the back of the brakes.
Look under the hood for the ABS sticker.
Look at the tires.
Remove a tire and look for the ABS sensor on the axle.

If you are unsure if a trailer is equipped with an Anti-Lock Braking System (ABS), look under the vehicle for the electronic control unit and wheel speed sensor wires coming from the back of the brakes.

7. When using road speed to know when to switch gears, you should:
Learn what speeds each gear is good for and shift up when necessary.
Watch other vehicles and try to keep pace.
Watch other trucks and shift when they shift.
Use the speed limit as a guide.

There are two indicators that determine when you need to shift into a higher gear. One indicator is the engine speed (rpm). You should read your vehicle's manual to learn its rpm range and shift up when you reach the top of that range. The other indicator is road speed (mph). You should learn which speeds each gear can accommodate, then keep an eye on the speedometer and shift up as needed.

8. When uncoupling a dolly, you should:
Unlock the pintle hook before moving the dolly out from under the rear trailer.
Move the dolly out from under the rear trailer before unlocking the pintle hook.
Raise the dolly landing gear.
Remove the dolly as quickly as possible.

Never unlock the pintle hook with the dolly still under the rear trailer. This could cause the dolly tow bar to fly up, possibly causing serious injury.

9. A driver should always:
Stay in the right lane.
Have an emergency plan.
Stay in the left lane.
Drive faster than the posted speed limit.

While driving, you should continually scan the road to spot potential hazards in advance. Make emergency plans for how to deal with the hazards if they become dangerous.

10. When backing, it is best to:
Rely only on the passenger’s side mirror.
Try to back up quickly.
Turn toward the passenger’s side whenever possible.
Use a helper, if possible.

If you must drive in reverse, you should back up slowly and use the mirrors on both sides of your vehicle. Use a helper to monitor your blind spots whenever possible. You and the helper should agree on a signal for "stop."

11. Which of the following is not a problem?
Loose or broken exhaust pipes
Loose or broken mounting brackets
Exhaust parts rubbing against fuel system parts
Exhaust system parts that are not leaking

When inspecting an exhaust system, you should verify that parts of the system are not loose, broken, or missing. The system's parts must be properly mounted and should not be rubbing against moving parts of the vehicle.

12. During an applied leakage test, the maximum leakage rate for a triple combination vehicle is:
10 psi in a minute.
8 psi in a minute.
6 psi in a minute.
4 psi in a minute.

It is important to know the maximum air loss rate that is safe for your specific vehicle. A triple combination should have a leakage rate no higher than 6 psi in a minute during an applied leakage test.

13. What is another name for the service line?
Control line
Exchange line
Surplus line
Parallel line

The service line, also called the control line or signal line, carries air to the trailer brakes and is controlled by the foot brake or trailer hand brake.

14. When doing an inspection, make sure your brake pads are:
Covered in grease.
Covered in coolant.
Covered in oil.
Free of oil and grease.

Potential problems to check for when inspecting brakes include cracked drums; shoes or pads with oil, grease, or brake fluid on them; and shoes that are missing, broken, or worn dangerously thin.

15. The parking brake should be:
Used whenever you park your vehicle.
Used while driving.
Set when driving in bad weather.

The parking brake in a vehicle with air brakes should be used every time the vehicle is parked.

16. Fully-loaded rigs:
Are less likely to roll over than empty rigs.
Are more likely to roll over than empty rigs.
Are just as likely to roll over as empty rigs.
Should not be driven.

Because the weight of cargo gives them a higher center of gravity, fully-loaded rigs are 10 times more likely to roll over in a crash than empty rigs.

17. You must put out emergency warning devices within ____ of stopping on the side of the road.
One minute
10 minutes
45 minutes
Two hours

If you must stop on the shoulder of a road, put out your emergency warning devices within 10 minutes of stopping. When pulling off the road to stop, be sure to turn on your four-way emergency flashers.

18. When checking your mirrors:
Do not use the passenger side mirror.
Do not use the driver's side mirror.
Both mirrors should be used.
Look in each mirror for long stretches of time.

To travel safely, it is essential that you know what is happening on all sides of your vehicle at all times. Check all mirrors frequently while driving.

19. If involved in a crash, basic procedures should include all of the following, except:
Protecting the area.
Notifying the proper authorities.
Caring for the injured.
Driving away without stopping.

If you are involved in a crash, the three basic things you need to do are protect the area, notify the proper authorities, and care for anyone injured. It is important to protect the accident site immediately after the accident occurs to help prevent another crash from happening in the same location.

20. Which of the following types of vehicles is most prone to the “crack-the-whip" effect?
An automobile
A three-axle tractor
A bobtail tractor
A triple combination

Double and triple combinations are the most vulnerable to turning over as a result of the "crack-the-whip" effect.

Your Progress
  • 0Incorrect (4 allowed to pass)
  • 0Correct