Indiana Driver’s Examination

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..

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
Passing Score

To prevent fatigue while driving, you should:

Explanation
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.

A distracted driver:

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

A steering wheel should be held:

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

In an engine compartment, loose belts will:

Explanation
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.

When you leave your vehicle, you should:

Explanation
Always apply the parking brake when leaving your vehicle.

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

Explanation
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.

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

Explanation
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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