CDL Test Prep

Which of these lights cannot be checked at the same time?

Turn signals, brake lights, and four-way flashers

You are inspecting hydraulic brakes. You should pump the brake pedal three times, then apply firm pressure to the pedal for five seconds. If the brakes are working properly, the pedal should:

Not move

Drivers of trucks and tractor trailers with cargo must check that the cargo is well secured within the first ____ miles of the trip

50

When starting a bus on a level surface with good traction, there is often no need for:

parking brakes

How does the weight of the vehicle affect stopping distance?

Empty trucks take longer to stop than if loaded, but this is not the normal case for buses

When you are starting to move up a hill from a stop

Release the parking brakes as you apply engine power

What is true about using a heater?

When driving in winter weather, you should check that the heater is working properly before starting your trip

Why is damage to the exhaust system a danger?

Poisonous fumes can enter the cab or sleeping compartment

Which of these is NOT a danger when an automatic transmission is forced into a low gear at a high speed?

A loss of steering control

Perception distance is the distance your vehicle travels from the time:

The eyes see a hazard to the time the brain knows that this is a hazard

Extra care is needed to keep your vehicle centered in your lane because commercial vehicles:

Are often wider than other vehicles

You should lightly apply your brakes to flash the brake lights if:

You are about to exit the road and need to slow down

Merging onto the road is safest if you

Wait for a large enough gap in the traffic to enter the road

Which of these is NOT something you should do if your headlights aren’t working properly?

Leave on your high beams

Which of the statements about backing a heavy vehicle is NOT true?

Because you cannot see, you should back slowly until you slightly bump into the dock

The distance that you should look ahead of your vehicle while driving is about ____ at low speeds

1 block

Which of these is correct about emergency or evasive action?

In order to turn quickly you must have a firm grip on the steering wheel

What does emergency braking mean?

Responding to a hazard by slowing the vehicle

When driving in cold weather, your tire tread should:

Provide enough traction to push the rig over wet pavement and through snow

Which of these is true about hauling hazardous materials?

Containers should be marked with four-inch diamond shaped hazard labels

Which vehicle will have the most difficulty staying in its lane during strong winds?

A double with an empty trailer

Why does vehicle speed naturally increase on a downgrade?

gravity

During the vehicle inspection, checking of ___ will NOT prevent a fire

Battery fluid level

When is it necessary to learn how a fire extinguisher works?

Before the fire happens

What is the most important reason to inspect your truck or bus?

Safety

You are checking your steering and exhaust system in a pre-trip inspection. Which of these problems, if found, should be fixed before the vehicle is driven?

Steering wheel play of more than 10 degrees ( 2 inches on 20 inches steering wheel)

Convex (curved) mirrors:

They show a wider area than flat mirrors show

Why is it important to shift gears correctly?

To keep control of the vehicle

What three distances build up the total stopping distance of your truck or bus?

Perceptio distance, reaction distance, and braking distance

Which is these actions are NOT recommended for a left turn?

Start at the inside lane and swing right as you turn

When you are passing a vehicle, pedestrian, or bicycle, you should assume that:

They may be moving to your traffic lane

When merging:

Use your mirrors to make sure the gap in traffic is large enough for you to enter safely.

Which of these is the proper signal to change lanes?

Signal early and change lane slowly and smoothly

You are driving in an area with few streetlights. If you cannot see well with your headlights, which of the actions may help:

Use your high beams when legal and keep your interior lights off

Most serious skids result from

Driving too fast for conditions

What should be true about other drivers?

Short term or daily rental truck drivers are often not use to the limited vision, which makes these drivers a hazard

What is true about bad weather and driving conditions?

When the temperature drops, the bridges freeze before the road

Which of these statements about the hazardous vehicle fire is true?

Poor cargo ventilation may cause cargo to catch on fire

You should wear a seat belt in a moving vehicle:

All the time

Which of the statements about pre-trip inspection is true?

If you need to tilt a cab, secure loose things so that they could not fall or break anything

Can state inspectors inspect your truck or bus?

Yes and they can put you out of service if unsafe

Which of these statements about cargo loading is true?

A state law dictates legal weight limit

Which of these is not required knowledge for drivers seeking a hazardous material endorsement?

Basic chemistry

To determine blood alcohol concentration level for a person, it is necessary to know:

their weight

Implied consent means:

You are giving your consent to be tested for alcohol in your blood

The engine brake effect is greater when the engine is ____ governed RPM and the transmission is in a ____ gear

near, lower

You are driving a 40-foot vehicle at 55 mph. The road is dry, and visibility is good. What is the least amount of space that you need to have in front of your vehicle?

5 seconds

What should yu do if a car coming toward you at night keeps its high beams on?

Look to the right lane or edge markings of the road

If you must cross into the oncoming lane to make a turn you should:

watch for an oncoming traffic

Which of these is true about driving in a tunnel?

There may be strong winds when exiting

You should use your horn when:

If it helps to avoid a crash

The tread depth on front steering wheel tires should be:

Not less than 4/32 inch.

Your vehicle will be put out of service if _____ or more leaves in any leaf spring are missing

1/4

Brake drums (or discs) must not have cracks longer than ____ the width of the fraction area

1/2

A hazard:

Is any road condition or other road user that is possible danger

You are driving a heavy vehicle. You must exit a highway using an off-ramp that curves downhill. You should:

Slow down to a safe speed before the turn

Which of these rigs has a higher chance to off-track while making a turn?

Tractor with two 27-feet trailers

How much space in front of you is needed while driving on a highway?

1 second for each 10 feet of vehicle length

Medicine used to treat the common cold:

often makes you sleepy and should not be used while driving

Which of these should you NOT do in an emergency situation?

It is not important how you break in an emergency situation

The primary cause of fatal crashes is:

driving too fast

A car suddenly cuts in front of you, creating a hazard. Which of these actions should you NOT take?

Honk your horn and stay close behind the car

What should you do when you see a hazard in the roadway ahead of you?

Use your four-way flashers or brake lights to warm others

If your brakes fail on a downgrade, you must first:

Look outside your vehicle for another means of slowing you

You should always turn on your emergency four-way flashers when you:

Park on the side of the road

Should brake adjustment be checked often?

Yes, because the brakes can get out of adjustment when they are used a lot.

Which of these is true about mirror adjusting?

You should adjust your mirrors before starting the trip

When you are driving on a snow-packed road, you should reduce your speed by:

1/2

The bridge formula:

Permits less maximum axle weight for axles that are closer together.

You should use your mirror to check?

Where the rear of your vehicle is while you make turns

Which of these is true about the use of drugs while driving?

Prescription drugs are allowed if a doctor says they will not affect the driving ability

Which of these is true about proper use of a steering wheel?

If you do not hold a wheel with both hands it could pull away from you

When are helpers needed to back your vehicle?

Whenever you have to back

To avoid an accident, you moved to the shoulder. Forced to return to the road, you should:

Using mirrors and turn signals, tur sharply to get back to the road

Which of these would NOT help if the windsheild is covered with ice?

dust brush

Heavy vehicles often move slower than others. Which of these is NOT a good rue to follow while driving a heavy vehicle?

Signal other drivers when it is safe to pass you

Tourists may be hazardous because?

They may move slowly, unexpectedly change lanes or stop

What keeps an engine cool in hot westher while driving?

enough engine oil level

cargo inspection

should be performed after every break you take while driving

A vehicle is loaded with very little weight on the drive axle. What may happen?

Poor traction

If your vehicle catches fire while you are driving, you should:

park in an open area

Which of these statements about marking a stopped vehicle is true?

if a hill or curve keeps drivers behind you from seeing the vehicle within 500 feet, the reflective triangle should be moved back to give adequate warning

containerized load

generally are used when freight Is carried part way by rail or ship

If a coolant container is part of a pressurized system, which of these is true?

You can check the coolant level while the engine is hot

When should you test your parking brakes?

while the vehicle is parked

When going down a long steep downgrade, you should always

use the braking effect of the engine

controlled braking is:

squeezing the brakes firmly without locking them up

Which of these is no a brake check you normally do during your walk-around inspection?

hydraulic brake cylinder leaks

one can recognize hazardous materials by looking at the container:

labels

Which of these is not a type of retarder?

robotic

the total weight of a powered unit, the trailer, and the cargo is called?

gross combination weight

Freeway exits can be dangerous for commercial vehicles. At what speed should you enter the exit?

Below the posted speed limit

Which of these statements is true?

Many heavy vehicle accidents occur between midnight and 6 a.m

Space to the ____ your vehicle is most important to manage.

front of

your brakes can get wet when driving through heavy rain. What can happen if the brakes are applied?

trailer jack-knife

Which of these statements about an inspection of the suspension components is true?

Axles’ mounts should be checked at each point where they are secured on the vehicle frame and axles

You are checking your brakes and suspension system for a pre-trip inspection. Which of these statements is true?

Brake shoes should not have oil, grease, or brake fluid on them

You do not have a hazardous materials endorsement in your commercial driver license. You can drive a vehicle hauling hazardous materials when:

the vehicle does not require placards

if you are convicted of driving a commercial vehicle under the influence of alcohol or drugs, you will lose your CDL for

1 year

Which of these is true about hazardous materials:

All hazardous materials present health and safety danger