Take Colorado CDL Class A Knowledge Test 1

QUESTION 1 / 25

What is Gross Vehicle Weight (GVW)?

Choose one answer below.

AThe total weight of a vehicle and its cargo✓BThe total weight of a vehicle before cargo✓CThe total weight of cargo✓DThe maximum weight allowed to be transported by a vehicle✓

QUESTION 2 / 25

If a tire fails while you are driving, you should:

Choose one answer below.

ABrake as hard as possible.✓BRelease the steering wheel.✓CStay off the brakes and let the vehicle slow down.✓DStop on the roadway.✓

QUESTION 3 / 25

When preparing to drive in the winter, be sure to check:

Choose one answer below.

AThe coolant level.✓BThe defrosting and heating equipment.✓CThe windshield wipers.✓DAll of the above.✓

QUESTION 4 / 25

If the low pressure warning light comes on while you are driving:

Choose one answer below.

ABraking will only occur if there is enough air in the tanks.✓BYou can brake 14 times before the air in the system runs out.✓CYou should continue to drive normally and check the brake system when it is convenient.✓DYou should continue driving, but turn the emergency flashers on to warn other motorists.✓

QUESTION 5 / 25

When driving in fog, you should:

Choose one answer below.

AUse the windshield wipers.✓BUse low beam headlights.✓CUse high beam headlights.✓DUse the air conditioning.✓

QUESTION 6 / 25

If you identify a distracted driver on the road, you should:

Choose one answer below.

AFollow their vehicle closely.✓BTry to get their attention.✓CGive them plenty of room.✓DFlash your lights at them.✓

QUESTION 7 / 25

Federal and state laws require:

Choose one answer below.

ADrivers to regularly inspect their vehicles.✓BDrivers to inspect their vehicles, but only if they believe there may be a problem.✓CDrivers to inspect their vehicles if planning to travel out-of-state.✓DDrivers to inspect their vehicles, but only if they will be transporting hazardous materials.✓

QUESTION 8 / 25

When inspecting your brakes, a slack adjuster should move ____ from where it is attached to the push rod.

Choose one answer below.

AAt least three inches✓BMore than two inches✓CUp to five inches✓DNo more than one inch✓

QUESTION 9 / 25

To confirm that a trailer has ABS, you can:

Choose one answer below.

ALook under the trailer for wheel speed sensors coming from the back of the brakes.✓BLook under the hood for the ABS sticker.✓CLook at the tires.✓DRemove a tire and look for the ABS sensor on the axle.✓

QUESTION 10 / 25

Which of the following is not an example of a distracted person that motorists should be worried about?

Choose one answer below.

AA driver talking to another person in a vehicle✓BChildren on the side of the road✓CConstruction workers on the side of the road✓DA person sitting on a bench waiting for a bus✓

QUESTION 11 / 25

Cargo inside a trailer:

Choose one answer below.

ADoes not need to be secured.✓BShould be stacked no more than three feet high.✓CShould be secured to prevent movement.✓DShould be loaded with the heaviest items on top of lighter items.✓

QUESTION 12 / 25

To receive a hazardous materials endorsement, an applicant will be required to supply:

Choose one answer below.

ATheir fingerprints.✓BTheir shoe size.✓CA list of countries visited within the last 10 years.✓DTheir employment history for the previous five years.✓

QUESTION 13 / 25

If driving a vehicle with a manual transmission, you can prevent your vehicle from rolling backward when starting from a stop by:

Choose one answer below.

APartly engaging the clutch before removing your foot from the brake pedal.✓BPlacing the vehicle in reverse before moving forward.✓CFully engaging the clutch before removing your foot from the brake pedal.✓DPlacing the vehicle in neutral before moving forward.✓

QUESTION 14 / 25

Pressing and releasing a brake pedal unnecessarily can:

Choose one answer below.

ARelease air faster than it can be replaced.✓BAdd more air to the braking system.✓CMake the brake pedal more sensitive.✓DCreate a loud noise.✓

QUESTION 15 / 25

The two indicators that determine when you should upshift are:

Choose one answer below.

AEngine speed and road speed.✓BOther trucks and road conditions.✓CTiming and road position.✓DOil pressure and air brake pressure.✓

QUESTION 16 / 25

When traveling down a downgrade, the speed of a vehicle will likely:

Choose one answer below.

ADecrease.✓BNot change.✓CIncrease.✓DMatch the speed of traffic.✓

QUESTION 17 / 25

To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:

Choose one answer below.

ASet the control to normal.✓BSet the control to the off position.✓CSet the control to neutral.✓DKeep the control at the halfway mark.✓

QUESTION 18 / 25

Test the low pressure warning signal:

Choose one answer below.

AOnce a month.✓BOnce a week.✓CTwice a week.✓DBefore every trip.✓

QUESTION 19 / 25

In the event of an engine fire, you should not:

Choose one answer below.

ATurn the engine off as soon as possible.✓BKeep the fire from spreading.✓COpen the hood.✓DSpray from the underside of the vehicle.✓

QUESTION 20 / 25

When only the tractor is equipped with an Anti-Lock Braking System (ABS):

Choose one answer below.

AThere is a decreased risk of jackknifing.✓BThere is an increased risk of jackknifing.✓CThe brakes will not work as effectively as they would without ABS.✓DThe brakes will become more sensitive.✓

QUESTION 21 / 25

What is a wig wag?

Choose one answer below.

AA type of warning system✓BA tube used to move air from the compressor to the tanks✓CA noise made by air brakes when used✓DA part within the braking unit that allows air to move freely✓

QUESTION 22 / 25

During a pre-trip inspection, belts in the engine compartment should be:

Choose one answer below.

ALoosened.✓BChecked for tightness.✓CInspected only if they seem frayed.✓DLeft alone and not inspected.✓

QUESTION 23 / 25

When driving through a curve during the skills test, you should:

Choose one answer below.

AVeer from your lane if needed to complete the curve.✓BReduce your speed after entering the curve.✓CRefrain from looking for other vehicles while turning.✓DReduce your speed before entering the curve.✓

QUESTION 24 / 25

If something is found to be unsafe during a pre-trip inspection, you should:

Choose one answer below.

AContinue with the trip and make an appointment with a mechanic after the trip is completed.✓BLet a more experienced driver use the truck.✓CGet the issue fixed immediately.✓DNot use the items found to be unsafe, but may continue driving normally.✓

QUESTION 25 / 25

Mirrors should be adjusted:

Choose one answer below.

AWhile moving.✓BWhen the trailers are straight.✓CWhen you are standing next to the vehicle.✓DBy an assistant.✓