California Driver’s Examination

Knowledge Test Class A

This license is required for driving any legal combination of vehicles, including vehicles under Class B and Class..

This license is required for driving any legal combination of vehicles, including vehicles under Class B and Class C. The GVWR of a trailer is not to exceed 10,000 pounds. To receive this license, applicants must pass a 50-question test. Each question has three answer choices. To pass, applicants must answer 40 questions correctly. Test questions come from the California Commercial Driver Handbook. 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. Endorsemetns that may be used with a Class A CDL are: Hazardous materials, Tank, Passenger, Doubles/Triples, HazMat and Tank, Air Brakes and School bus.

Number of Question
Passing Score

Drivers trapped behind a slow-moving vehicle often:

Explanation
It is common for drivers to tailgate slow-moving vehicles that cannot keep up with the speed of surrounding traffic. If you are being tailgated, allow the other driver to pass your vehicle.

Rust around wheel nuts may mean:

Explanation
It is important to inspect your tires before every drive. Rust around wheel nuts may indicate that they are loose.

Mirrors should be checked:

Explanation
Always check for traffic in your mirrors before changing lanes. Frequent mirror checks should be a part of your normal scanning routine.

To apply for a CDL, an applicant must be at least:

Explanation
In California, you must be at least 18 years old to apply for a commercial driver license.

If you’re unfamiliar with the area in which you must back up, you should:

Explanation
Before backing up, you should get out of your vehicle and look at your line of travel. Check your clearance to the sides and overhead.

A ____ allows a driver to gradually apply spring brakes.

Explanation
A modulating control valve allows a driver to gradually apply spring brakes. In equipped vehicles, the valve is controlled by a lever located on the dashboard.

Cargo should have one tie-down for every ____ of cargo.

Explanation
Cargo should be restrained by at least one tie-down for every 10 feet of cargo. However, all cargo should have at least two tie-downs, no matter the size of the cargo.
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