Wisconsin
CDL Practice Test

Use these sample tests as you prepare to gain a CDL in Wisconsin. This site is free to use and you can take these practice tests as many times as you would like. The questions on these tests cover topics and regulations pertaining to the various class levels of CDL licenses in Wisconsin. 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 Quiz" button below to begin. Good luck!

1 / 40

Air tanks should be drained:

to prevent sludge from clogginng up the brake system valves

at the end of each shift or day

manually when the automatic devices fail

all of these answers are correct

2 / 40

Select the best description of a baffle tank:

They are tanks divided down into multiple smaller tanks.

They are divided and have holes for liquid to flow through controlling surge.

None of the answers listed.

It is one large tank.

3 / 40

When backing your vehicle, which of the following is NOT recommended

back and turn towards the driver's side

back as slow as possible

use the lowest reverse gear

back towards the right side

4 / 40

Overhead inside mirror is used to:

see the blind spot immediately behind the bus

see the area where students exit the bus

monitor traffic that approaches and enters the blind spot area

see all of the students

5 / 40

Why should you test the tractor protection valve?

all answers listed

to avoid loss of air from the trailer brakes

to avoid the emergency brakes kicking on due to loss of air

to avoid loss of air from the air hose

6 / 40

When does your vehicle's single brake system need an adjustment?

when the governor stops between 75-90 psi

when the pressure builds from 85 to 100 psi in less than 1 minute

if the compressor cuts out at between 70 and 90 psi

if the pressure builds from 50 to 75 psi in less than 3 minutes

7 / 40

Where are shut off valves located on trailers that are doubles or triples?

on emergency air lines

on emergency and service air lines

on parking brake lines

on service air lines

8 / 40

For emergency braking to avoid a crash when driving a double trailer you should:

use the trailer brakes only

slam down the brake pedal and keep pressure on it

none of the answers listed

do stab or controlled braking

9 / 40

A hazard class that uses transport indexes to determine the amount that can be loaded in a single vehicle is _____.

Class 7 radioactive materials

Class 3 flammable liquids

Class 1 explosives

Class 6 poisons

10 / 40

If you are stopped on an incline, how can you start moving without rolling back?

fully engage the clutch

aggressively pump the accelerator

apply the parking brake

shift to neutral

11 / 40

The object that doesn't get checked at the side of the trailer is the:

The frame

The locking pins/tandem release arm

The landing gear

Electrical/air connections

12 / 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

brake hard after accelerating

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

13 / 40

Your vehicle is going down a long hill and your brakes begin to fail. What should you do?

put the gears in neutral

downshift

pump the brake pedal

look for an escape ramp or an escape route

14 / 40

What is the safest way to stop unruly behavior on the bus?

Keep checking the rear view mirror so you can see what happened and report to the principal.

Have the unruly students move to the front of the bus.

Pull off the road in a safe location, secure the bus, stand up, and tell the students what behavior you expect of them.

Yell loudly for the students to sit down and behave themselves.

15 / 40

If you are driving a 100-foot truck with double trailers at 30 mph in dry conditions, how many seconds of space should there be between your truck and other vehicles?

16 / 40

The safety catch for the fifth wheel locking lever must be ____ for a coupling to be complete.

above the locking lever

threaded through the locking lever

below the locking lever

sticking straight up

17 / 40

What does the amount of liquid you can carry depend on?

The vehicle's horsepower rating.

The material the baffles are made from.

The outage of the liquid.

The center of gravity.

18 / 40

Charter drivers should not:

Mention rules at the start of the trip.

Remind riders about rules once trip begins.

Explain rules at the start of the trip.

Allow riders on the bus until departure time.

19 / 40

Select the true statement in regards to managing the space to the sides:

you should drive down the center of both lanes over the pavement markings

high wind gusts will not cause any issues for doubles or triples

you should always keep your vehicle to the right side of the lane

you should try to avoid driving next to others when possible

20 / 40

You should____to check the free play of manual slack adjusters on S-Cam brakes.

chock the wheels and release the parking brakes after parking on a level ground

apply the parking brake after stopping on level ground

drain off air pressure before adjusting after parking on level ground

after parking on a slight grade, release the parking brake, activate the service brakes and check for vehicle movements

21 / 40

When fueling a placarded vehicle, someone must always be:

At the nozzle, controlling the fuel flow.

Within 10 feet of the pump with a fire extinguisher.

Be at the rear most corner on the vehicle.

At the emergency power shut off for the pump.

22 / 40

Operating a motor vehicle with the intent of doing harm to others or physically assaulting a driver or their vehicle is known as?

defensive driving

tailgating

aggressive driving

road rage

23 / 40

What is a common cause of tire fires?

underinflated tires

all of these answers are correct

overinflated tires

cold tires

24 / 40

Why are you required to take an exam about air brakes?

it is a federal requirement

all trucks have air brakes

you cannot receive a CDL at all otherwise

you would have to get a CDL with a restriction otherwise

25 / 40

On a drawbridge, you do not need to stop, but must slow down and make sure it's safe, when:

The bridge has an attendant or traffic officer who controls traffic whenever the bridge opens.

There is a traffic light showing green.

Both of these answers are correct.

None of these answers are correct.

26 / 40

Select the factors that can cause your brakes to fade or fail:

using the service brakes excessively

all of these answers are correct

the brakes are out of adjustment

not relying on engine braking enough

27 / 40

Select what you should not do when coupling the glad hands.

clean the couplers before connecting them

cross the air supply lines to test for leaks

press the seals together at a 90 degree angle

make sure to match the colors or check the tags before connecting

28 / 40

Air pressure loss in a vehicle with a fully charged air system should be less than_______after the initial drop and brake applied.

4 psi a minute

1 psi a minute

none of the answers listed

3 psi a minute

29 / 40

What is the safest way to stop unruly behavior on the bus?

yell loudly for the students to sit down and behave themselves

pull off the road in a safe location, secure the bus, stand up, and tell the students what behavior you expect of them

keep checking the rear view mirror so you can see what happened and report to the principal

have the unruly students move to the front of the bus

30 / 40

Select the first action to do when the low air pressure warning comes on:

shift into a higher gear

come to a stop and safely park as soon as possible

adjust the engine brake

release the supply control valve

31 / 40

When should you check your mirrors for a lane change?

All of these answers are correct.

After completing the lane change.

Before and after signaling the change.

Right after starting the lane change.

32 / 40

A truck with baffles will handle:

With less front to back surge compared to trailers without baffles.

The same as a tanker with no baffles.

None of the answers listed.

Heavier that it actually is.

33 / 40

While completing the 3rd component of the air brake check of a combination vehicle, at what psi should the tracor protection valve and parking brake valve should pop out?

40 psi

20 psi

70 psi

They should never pop out

34 / 40

Which of the following is NOT an acceptable type of marking for hazardous materials?

Un marks

Descriptive name in roman print

Identification number

Name in italics

35 / 40

Bus drivers must have a CDL if they drive a vehicle:

Designed to seat more than 16 or more persons, including the driver.

That has a gross weight rating of more than 26,000 pounds.

That is designed to carry more than nine passengers.

That has air brakes.

36 / 40

Remember to_____when steering to avoid a crash while driving doubles.

all answers listed

have both hands on the steering wheel

be prepared to counter-steer

keep your foot off the brake while turning

37 / 40

Which of the following is something the driver must watch for:

All of these answers are correct.

Gaps your bus needs to accelerate and merge with traffic.

Appropriate clearance around and over the bus.

Poles and tree limbs at stops.

38 / 40

Bus drivers must have a commercial driver license if they drive a vehicle designed to seat more than:

15 or more persons, including the driver.

10 or more persons, including the driver.

20 or more persons, excluding the driver.

16 or more persons, including the driver.

39 / 40

What is the benefit of ABS?

it prevents the wheels from locking up during heavy braking or slippery conditions

it decreases your stopping distance

all of these answers are correct

it provides an added layer of safety for truck drivers

40 / 40

When should you avoid using the parking brake?

whenever you park

when the air pressure is low

while on an incline

when the brakes are hot

Your score is

The average score is 42%

5/5 - (1 vote)

CDL Category Practice Tests

CDL Practice Test

How To Get A Wisconsin Commercial Drivers License

To be eligible for a CDL in Wisconsin, applicants must meet the following age eligibility requirements:

Be at least 18 years old to operate a commercial vehicle intrastate (within Wisconsin only).
Be at least 21 years old to operate a commercial vehicle interstate (outside of Wisconsin).

Wisconsin CDL applicants must be medically certified that they are physically fit to operate a commercial vehicle and pass a vision test.

Applicants are required to submit the following documents:

(Form MV3230) Commercial Driver: Tier of Operation
(Form MCSA-5876) Medical Examiner’s Certificate

Interstate non-excepted (drivers who do not work for the state or federal governments) must meet federal DOT requirements. Intrastate non-excepted drivers must meet the state requirements.

Drivers who have had their licenses revoked, suspended, denied or canceled are not eligible for a CDL in Wisconsin. Applicants can be disqualified for having multiple licenses.

Endorsements

H – Hazmat Vehicles
N – Tank Vehicles
P – Passenger Vehicles
S – School Bus
T – Double or Triple Trailer
X – Combination Tank Vehicles and Hazmat Vehicles

Hit the Open Road

Wisconsin CDL License Test Tips

Knowledge Test
All Wisconsin CDL applicants must pass the general knowledge test prior to taking the skills test. To pass the Wisconsin test, applicants must score 80 percent or higher. Applicants who require additional endorsements must pass additional tests and pay the required fees.

Skills Test
The Wisconsin skills test can be taken 14 days after applicants pass the knowledge test. It includes a pre-trip vehicle inspection, basic control skills and on-road driving. Applicants must pass each section.

Military CDL Waivers
Military veterans and current military members can apply to have the skills exam waived if they meet the requirements.

To qualify for a waiver, applicants must:

Reside in Wisconsin.
Be currently active in the military.
Have operated a commercial vehicle as part of their military duties.
Have been honorably discharged from the military within the past 12 months.
Submit (Form MV3588) Military Service CDL Skills Test Waiver Application. (A portion of this document must be completed by the commanding or training officer.

Additional Information

Information on the Wisconsin Department of Transportation

The State of Wisconsin Department of Transportation is the authority for CDL regulations in Wisconsin. To get more information contact them via:

Website: https://wisconsindot.gov/Pages/dmv/com-drv-vehs/cdl-how-aply/cdl-how-to-apply.aspx

Phone: 608.264.7447

Additional Wisconsin CDL Helpful Links

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

Wisconsin CDL Practice Test

CDL Category Practice Tests

CDL Practice Test

How To Get A Wisconsin Commercial Drivers License

Hit the Open Road

Wisconsin CDL License Test Tips

Additional Information

Information on the Wisconsin Department of Transportation

Additional Wisconsin CDL Helpful Links

Wisconsin
CDL Practice Test