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Indiana CDL Permit Test - Knowledge Test Class B

Number of questions: 50
Passing score: 40
Directions: This license is required for driving a single vehicle with a GVWR of more than 26,001 pounds, and a trailer not to exceed 10,000 pounds gross vehicle weight rating, or a vehicle designed to transport 24 or more people (including the driver). 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 Indiana Commercial Driver License Manual. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Pre-Trip Vehicle Inspection Test, Basic Vehicle Control Skills Test and On-Road Driving.. Endorsements that may be used with a Class B CDL are: Hazardous materials, Tank, Passenger, HazMat and Tank, Air Brakes and School bus.
You have made error so far
Passing grade —
10 or fewer errors

When you press the brake pedal in a vehicle with S-cam brakes, air pressure pushes out the rod and moves the:

Slack adjuster.
Brake drum.
Alcohol evaporator.

On newer vehicles, how do you put on the parking brake?

Move a lever to the right.
Push in the yellow, diamond-shaped knob.
Pull out the yellow, diamond-shaped knob.
Pull up on the steering column.

If your coolant level is found to be low, you should:

Drain the radiator.
Add more coolant.
Add engine oil.
Tighten the belts.

The ____ tells a driver how much pressure is in the air tanks.

Application pressure gauge
Air compressor governor
Supply pressure gauge
Drum brake

Windshield wiper blades should be:


A driver can maintain alertness by:

Not wearing sunglasses during the day.
Keeping the cab warm.
Eating heavy foods.
Having another person ride with them.

When it is difficult to see, such as at dawn or dusk, what is the best way to make your vehicle more visible?

Use your high beam lights.
Use your low beam lights.
Use only your clearance lights.
Do not use any lights.
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