Instructions

Knowledge Test Class A

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.. Read More

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 50

Passing Score 40

1. Drivers trapped behind a slow-moving vehicle often:

Follow the vehicle too closely.

Allow the vehicle plenty of space.

Are happy with the speed of travel.

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.

2. Rust around wheel nuts may mean:

It rained recently.

The nuts are loose.

The nuts are too tight.

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

3. Mirrors should be checked:

Before every lane change.

When changing lanes, but only when other vehicles are nearby.

When changing lanes, but only if it is dark outside.

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

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

15 years old.

18 years old.

21 years old.

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

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

Get out of your vehicle and walk around the area to become more familiar with it.

Not use both side mirrors because it can be distracting.

Wait for someone else to back up in the area so you can see how they do it.

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.

6. A ____ allows a driver to gradually apply spring brakes.

Modulating control valve

Trailer air supply control

Relay valve

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.

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

Five feet

10 feet

20 feet

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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