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.. Read More

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. Test questions come from the Indiana Commercial Driver License Manual. To pass, applicants must answer 40 questions correctly. Each question has four possible answer choices. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Combination Vehicles, Pre-Trip Vehicle Inspection Test, Basic Vehicle Control Skills Test and On-Road Driving. Endorsements that may be used with a Class A CDL are: Hazardous materials, Tank, Passenger, Doubles/Triples, HazMat, Tank, Air Brakes and School bus.

Number of Question 50

Passing Score 40

1. To prevent fatigue while driving, you should:

Keep the cab warm.

Keep the cab cool.

Keep the cab poorly ventilated.

Close the vents.

A hot, poorly-ventilated area can make a person sleepy. Opening a window, opening a vent, or using the air conditioning can help keep the cab cool and reduce the risk of fatigue.

2. A distracted driver:

Usually reacts well to hazards.

Usually has slowed perception.

Is usually aware of what is happening around them.

Is a good person to follow.

Driving while distracted may result in slowed perception, delayed decision-making, and improper actions. Watch for distracted drivers and avoid them, when possible.

3. A steering wheel should be held:

With both hands.

With one hand, keeping the other hand free for other tasks.

With one hand at a time, alternating between hands.

At the base of the wheel.

A steering wheel should be held firmly with both hands, positioned on opposite sides of the wheel.

4. In an engine compartment, loose belts will:

Not turn the water pump and/or fan properly, causing the engine to overheat.

Make the engine run more efficiently.

Make the fan run too much, causing the engine to run too coolly.

Last longer than tight belts.

Be sure to check the tightness of the belts in your engine compartment. Loose belts will not turn the water pump and/or fan properly, which can lead the engine overheating.

5. When you leave your vehicle, you should:

Apply the parking brake.

Apply the air brake.

Not apply any brake.

Leave the door open.

Always apply the parking brake when leaving your vehicle.

6. In cold weather, an alcohol evaporator should be checked and filled:

Once a week.

Every day.

Every hour.

Once a month.

An alcohol evaporator can help prevent ice from building up in an air brake system. In cold weather, the evaporator should be checked and refilled every day.

7. What happens if the air pressure in a system's air tanks falls below 60 psi?

A warning light will come on.

The vehicle will not shift out of gear.

The front lights will flash.

The vehicle should stop.

In an air brake system, a low pressure warning signal should activate if the pressure in the air tanks falls to a level below 60 psi. This signal may be in the form of a warning light or a wig wag.

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