idaho
CDL Practice Test

Idaho! You will be presented with 40 questions and you must answer 34 questions correctly to pass. There is a 50 minute time limit. You may not go back once you answer a question. Click the "Start Test" button below to begin. Good luck!

1 / 40

Which of the following statements about loading and unloading cargo tanks is false?

The person in attendance must be aware of the danger.

The person attending the tanker must have a clear view of it.

The person in attendance must be within 50 ft of the tanker.

The person in attendance must be authorized and able to move the vehicle.

2 / 40

How should the pintle hook be when backing a dolly under the second trailer?

in the unlatched position

in the latched position

in a halfway open position

removed from the dolly

3 / 40

This carries hydraulic fluid or air to the wheel brake assemby.

Brake drums

Slack pieces

Brake lines/hoses

Connector rods

4 / 40

If hazardous material is spilling from your vehicle, do not move your vehicle:

Any more than 500 feet.

In an upwind direction.

Any more that 450 feet.

Any more than safety required.

5 / 40

The driver's manual advises you to disconnect the steering axle brake to keep the rig straight:

never

whever you feel like it

when it is raining

in ideal conditions

6 / 40

Which of the following statements about overhead space is true?

an empty van is lower than a loaded one

warning lights are always installed on low bridges and overpasses

the weight of the cargo changes a truck's height

the heights posted at bridges are usually accurate

7 / 40

When transporting both hazardous and non hazardous materials, your bills must:

Describe the hazardous materials first.

Have the hazardous materials highlighted.

Any one of the above.

Identify the materials by the letter x or rq in the hm column.

8 / 40

Select the true statement in regards to when a bulk tank vehicle stops at an intersection on a slippery surface:

The movement of the liquid may push the truck into the intersection.

The liquid may leak out of the tank.

The trailer may slide to the side due to the rocking motion.

The trailer may slide into the oncoming traffic.

9 / 40

Select what you should do before leaving the vehicle unattended:

chock the wheels

all of these answers are correct

remove the keys from the ignition

apply the parking brakes

10 / 40

Which trailer is more likely to roll over when pulling 3 trailers?

the first trailer

the tractor

the last trailer

the second trailer

11 / 40

Where should the safety catch for the fifth wheel locking lever be located for coupling to be complete?

through the locking lever

outside of the locking lever

below the locking lever

above the locking lever

12 / 40

What does it mean when the safety valve releases air?

you need it to have it checked out by a mechanic because something is wrong

pressure has passed 150 psi

there is too much air in the air compressor

all of these answers are correct

13 / 40

With Division 1.1, 1.2, or 1.3 Class A or B, how close can you park to a bridge, tunnel, or building?

Do not park within 200 feet.

Do not park within 100 feet.

Do not park within 300 feet.

Do not park within 500 feet.

14 / 40

How do you test the trailer service brakes?

apply pressure to the brake pedal

release air to the spring brakes

apply the hand control and check to see if you feel the trailer brakes come on

test the brakes out while driving at 5 mph

15 / 40

Which of the following parts do not get checked in the Bus Interior inspection:

Each hand-hold and railing.

Emergency exit handles.

Signaling devices, including the restroom emergency buzzer, if the bus has a restroom.

Seat coverings.

16 / 40

How can you determine if your vehicle is equipped with ABS?

look for wheel speed sensor wires that are coming from the rear of your brakes

all of these answers are correct

check for yellow abs malfunction lamps on the instrument panel

check if your vehicle was manufactured after March 1, 1998 (they are required to have the panel light)

17 / 40

While completing the 1st component of the air brake check you are required to fully push down on the foot brake and _____.

see if the air pressure drops more than 3 lbs in a minute while holding it down for that full minute in a single vehicle

none of the answers listed

see if the air pressure drops more than 4 lbs in a minute while holding it down for a full minute in a combination vehicle

both of the answers listed

18 / 40

You should adjust all the outside left and right side flat mirrors to see:

The rear right and left tires touching the ground as well as 200 feet behind the bus.

The entire area to the rear of the mirror along the side of the bus.

The children's exit path out of the main bus door.

The passenger area inside the bus.

19 / 40

Which of the following types of emergency equipment must you have on your bus?

Reflectors, fire extinguisher, and accident reporting kit.

Hydraulic jack, fire extinguisher, and signal flares.

Spare electric fuses, fire extinguisher, and accident reporting kit.

Fire extinguisher, spare electric fuses, and reflectors.

20 / 40

You must have placards for explosives, poison gas or flammables exceeding:

100 pounds

10 pounds

10 cartons

Any amount

21 / 40

Where should you place your warning devices if you must stop on a one-way or divided highway?

20 feet, 50 feet, and 100 feet toward approaching traffic

100 feet, 200 feet, and 300 feet toward approaching traffic

50 feet, 100 feet, and 150 feet toward approaching traffic

10 feet, 100 feet, and 200 feet toward approaching traffic

22 / 40

Select why you should not use the trailer hand valve while driving:

you should only ever use the parking brake

there is a possibility it will make the trailer skid

it will cause the tractor to shake

it does not work as well as the foot brake does

23 / 40

Select the true statement about retest markings:

Must have a date of the last retest marked.

They must be stamped on the tank.

All answers listed.

It shows what type of inspection or test was completed.

24 / 40

How should the shut off valves at the rear of the trailer be when inspecting doubles?

closed at the rear of the last trailer and front trailer

none of the answers listed

open at the rear of the last trailer and front trailer

closed at the rear of the last trailer and open at the rear of the front trailer

25 / 40

This object is not checked at the rear of the trailer.

The back doors

The header board

The bumper

The mud flaps

26 / 40

This object should not be spliced, cut, chafed, or worn through to allow steel braid to show.

Electric/air lines

Tires

Mud flaps

The lockjaw

27 / 40

What school bus accidents should be reported?

All accidents.

Only accidents determined to be the fault of the bus driver.

No accidents.

Only accidents casusing injury.

28 / 40

What will happen should a driver cross the air lines when hooking up the an older trailer?

if there are no spring brakes, you can drive on but there will be no trailer brakes

the brake pedal will activate the trailer spring brakes instead of the air brakes

the hand valve will activate the tractor brakes instead of the trailer brakes

none of the answers listed

29 / 40

Select how you would check the truck's slack adjusters.

while wearing gloves, pull hard on each slack adjuster that you can reach

all of these answers are correct

listen for any strange noises while applying pressure to the brake pedal

brake hard after accelerating

30 / 40

If there is rust around the nuts, what may it indicate?

They need to be changed out.

They are fitted just right.

They are loose.

There is a leak somewhere.

31 / 40

What is the minimum amount of distance you should maintain when driving at 50 mph in ideal conditions with a 100 ft twin trailer combination?

13 seconds

11 seconds

6 seconds

8 seconds

32 / 40

You should____when an emergency requires you to quickly stop due to a crash.

use stab or controlled braking

use the hand valve

maintain pressure on the brake pedal

use only the engine brakes

33 / 40

Which of the following is NOT a part of the steering system?

steering knuckle

main spring

hydraulic fluid reservoir

tie rod

34 / 40

What will probably happen if the converter dolly is still under the second trailer and the pintle hook is unhooked?

the dolly tow bar could fly up

the engine brakes will unlock

the air lines will explode

nothing will happen

35 / 40

You should check that the following makes an audible noise:

Electric or air horn

Air leaks

Engine brakes

Radio system

36 / 40

When driving tank vehicles you should:

None of the answers listed.

Come to a stop before entering a curve and then accelerate through it.

Maintain the posted speed limit as you enter the curve.

Decrease your speed before entering a curve and then accelerate through it.

37 / 40

There must be a hazardous materials identification number on the ______ and on the ______.

shipping papers, package

package, trailer

invoice, shipping papers

trailer, packages

38 / 40

What are some things you should check on the front of your vehicle when doing the walk-around inspection?

windshield, wipers, mirrors, hood latches

oil, transmission, air compressor, radiator

low beams, high beams, four way flashers, turn signals

tires, steering parts, suspension parts, headlights

39 / 40

Which seats must have a seat belt:

Women and children seats.

All of these answers are correct.

Senior citizen seats.

The driver's seat.

40 / 40

"Outages" is the word to describe the amount of space required for liquids to expand in as they warm.

False, it's when the vehicle air braking system fails in some way

True

False, it's when the vehicle power system fails in some way

False, it's when the vehicle engine fails in some way

Your score is

The average score is 0%

5/5 - (2 votes)

CDL Category Practice Tests

CDL Practice Test

How To Get A idaho Commercial Drivers License

Applicants can be age 18 or older when applying for their CDL. Those under the age of 21 are not eligible for the Hazmat or Doubles/Triples Endorsement. All applicants must get a DOT medical card to shows their ability to be physically able to drive a commercial motor vehicle.

Any drivers that fall into the following categories are disqualified from receiving their CDL:

Having more than one driver’s license.
Being convicted of an impaired driving offense in a commercial vehicle within the prior 24 months to submitting the CDL application.
Current suspended, revoked, denied, or canceled driver’s license.
Having CDL disqualifications in other states.

All applicants are required to complete a practical skills test and knowledge test in order to receive their CDL. Adding endorsements to a CDL will require additional knowledge tests and practical skills tests.

Endorsements
T – Doubles / Triples
P – Passenger
N – Tank Vehicles
H – Hazardous Materials
X – Tank Vehicle That Carries Hazardous Materials

Hit the Open Road

idaho CDL License Test Tips

Applicants for an Idaho CDL must complete a written knowledge test to showcase their retention of the commercial driving laws. Class A drivers are required to take a 70 question assessment that includes 20 questions specifically about combination vehicles. Class B and C applicants are required to pass a 50 question assessment. Those seeking endorsements and removal of the Air Brake Restriction must take additional tests that range between 20 and 30 questions. All tests must be passed with a score of 80 percent or better.

CDL applicants are required to pass a three-part skills test. These parts include a driving test, basic control skills test, and vehicle inspection test. This can be completed at an Idaho State Driving Facility or other approved testing site.

Additional Information

Information on the Idaho Transportation Department

The Idaho Transportation Department administers the CDL requirements and testing in Idaho. To get more information contact them via:

Website: https://trucking.idaho.gov/commercial-drivers-license-cdl/

Phone: 208.334.8000

Additional Idaho CDL Helpful Links

Please use the links below to access more valuable Idaho CDL testing resources and to learn more about practice driving tests for the state of Idaho.

idaho CDL Practice Test

CDL Category Practice Tests

CDL Practice Test

How To Get A idaho Commercial Drivers License

Hit the Open Road

idaho CDL License Test Tips

Additional Information

Information on the Idaho Transportation Department

Additional Idaho CDL Helpful Links

idaho
CDL Practice Test