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 three possible answer choices. Test questions come from the Idaho Commercial Driver’s 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. People working on a disabled vehicle:

Are probably aware of the roadway.

May be distracted by the repair and not pay attention to the roadway.

Are exempt from traffic laws.

Be cautious when driving near people who are working on a disabled vehicle on the side of the road. They may be focused on the repair and not paying attention to nearby traffic.

2. Which of the following is not a type of tie-down equipment?

Ropes

Straps

Velcro

You must use the proper number of tie-downs when securing cargo on a flatbed trailer. Examples of tie-down equipment includes ropes, straps, and chains.

3. Vehicles driving behind a truck:

May have difficulty seeing objects in front of the truck.

Often have a great view of the roadway in front of them.

Do not need to signal.

Your truck may block the views of drivers behind you, making them unaware of any upcoming hazards that require you to stop. For this reason, it is a good idea to flash your brakes and warn other drivers before slowing or stopping.

4. If you are driving and the ABS light comes on, it means that the ABS:

Cannot work due to weather conditions.

Has just been activated.

Is not working properly.

ABS malfunction lamps indicate that something in the Anti-Lock Braking System is not working properly.

5. You must have an air brake endorsement:

To use a vehicle with air brakes.

To drive any truck with a trailer.

To transport hazardous materials.

You must take an air brakes knowledge test to become licensed to operate a vehicle that is equipped with air brakes, including an air over hydraulic braking system.

6. If the coolant temperature gauge goes above the highest safe temperature, you should:

Continue to drive.

Pull over and figure out what's wrong.

Run the air conditioner.

If the coolant temperature gauge goes above the highest safe temperature, you should stop driving as soon as possible and try to figure out what is wrong. There could be an issue in your vehicle that could lead to engine failure and possibly a fire.

7. Drowsy driving is most common during:

The night.

The early morning.

The mid-afternoon.

Drowsy driving is most common during the night because people are naturally prone to be less alert in the hours during which they are normally asleep. If you must drive at night, take every precaution to prevent fatigued driving.

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