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 Florida CDL Handbook. To pass, applicants must answer 40 questions correctly. 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

1. When checking its automatic transmission fluid, the vehicle:

Explanation
Your vehicle's engine may need to be running in order for you to check the level of its automatic transmission fluid.

2. If driving a truck that requires a CDL for operation:

Explanation
For safety, you must wear your seat belt at all times while operating a CMV.

3. Header boards:

Explanation
Front-end header boards, also known as "headache racks," protect the driver from cargo moving in the event of a crash or emergency stop.

4. For safety purposes, when should you turn off a retarder?

Explanation
Retarders are mechanisms in some vehicles that help slow a vehicle and reduce the need for braking. However, using a retarder may cause wheels to skid when they have poor traction. Turn off retarders when traveling under wet, snowy, or icy conditions.

5. In a newer vehicle, you apply the parking brake:

Explanation
In a newer vehicle with air brakes, the parking brake is controlled by a diamond-shaped yellow knob. The knob is pulled out to apply the parking brakes and pushed in to release them.

6. If federal inspectors judge your vehicle to be unsafe, they can:

Explanation
If a federal or state inspector judges a CMV to be unsafe, they may put it out-of-service until it is fixed.

7. If driving a school bus, your four-way flashers should:

Explanation
When driving a school bus, you must activate your four-way flashers while approaching and crossing a railroad crossing. Deactivate the flashers once your entire vehicle has cleared the tracks.
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