Instructions

Knowledge Test Class A

This license is required for driving any legal combination of vehicles, with a gross combination weight rating of 26,001 pounds or more, provided the GVWR of a trailer exceeds 10,000 pounds To receive this license, applicants must pass a 50-question test. To pass, applicants must answer 40 questions correctly. Each question has four possible answer choices. Test questions come from the Colorado Commercial Driver License Manual. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Combination, Doubles and Hazardous Materials. Endorsements that may be used with a Class A CDL are: Hazardous materials, Tank, Passenger, HazMat and Tank, Air Brakes and School bus.

Number of Question 50

Passing Score 40

1. What is Gross Vehicle Weight (GVW)?

The total weight of a vehicle and its cargo

The total weight of a vehicle before cargo

The total weight of cargo

The maximum weight allowed to be transported by a vehicle

Gross Vehicle Weight (GVW) is the total weight of a single vehicle and its load of cargo.

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

Brake as hard as possible.

Release the steering wheel.

Stay off the brakes and let the vehicle slow down.

Stop on the roadway.

In the event of tire failure, hold the steering wheel firmly. Stay off the brakes and let the vehicle slow down on its own. Once the vehicle has slowed considerably, you should brake very gently, pull off the road, and stop.

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

The coolant level.

The defrosting and heating equipment.

The windshield wipers.

All of the above.

Before driving during the winter, make sure to check your defrosting and heating equipment, coolant and antifreeze levels, wipers and washers, tire tread, tire chains, lights, reflectors, and exhaust system. Clear ice and snow from all windows, mirrors, hand holds, steps, deck plates, and radiator shutters. Make sure the winterfront is not closed too tightly.

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

Braking will only occur if there is enough air in the tanks.

You can brake 14 times before the air in the system runs out.

You should continue to drive normally and check the brake system when it is convenient.

You should continue driving, but turn the emergency flashers on to warn other motorists.

If the low air pressure warning light turns on, you should stop and safely park your vehicle as soon as possible. Controlled braking will be possible only as long as enough air remains in the tanks.

5. When driving in fog, you should:

Use the windshield wipers.

Use low beam headlights.

Use high beam headlights.

Use the air conditioning.

If you must drive in fog, you should use your low beam headlights and fog lights, even during the daytime.

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

Follow their vehicle closely.

Try to get their attention.

Give them plenty of room.

Flash your lights at them.

If you encounter a distracted driver, make sure to give them plenty of room. Be very careful if you pass their vehicle because the driver may be unaware of your presence and drift into your lane.

7. Federal and state laws require:

Drivers to regularly inspect their vehicles.

Drivers to inspect their vehicles, but only if they believe there may be a problem.

Drivers to inspect their vehicles if planning to travel out-of-state.

Drivers to inspect their vehicles, but only if they will be transporting hazardous materials.

Commercial drivers are required by federal and state laws to inspect their vehicles before every trip. Regular inspections can help drivers identify issues before they become dangerous and costly.

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