Washington Driver's Examination

Air Brakes #1

FREE Air Brakes Endorsement Test Online | Washington 2024

Train for FREE online with our Washington CDL air brake test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a WA Class A/Class B driver license in 2021, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that the requirements for CDL may vary from state to state.

Number of Question 25

Passing Score 20

Number of Tests 20

1 . What helps prevent wheel lockup when braking?

An Anti-Lock Braking System (ABS)

Air brakes

An alternator

The purpose of an Anti-Lock Braking System (ABS) is to prevent wheel lockup while brakes are being applied.

2 . Lights that indicate that anti-lock brakes are not working are:

Gray.

Blue.

Yellow.

Vehicles equipped with Anti-Lock Braking Systems (ABS) have yellow malfunction lights to indicate issues in the braking system.

3 . In a vehicle with dual air brakes, a leak in one system ____ the second system.

Will always affect

May not affect

Is caused by

A dual air brake system is made up of two separate air brake systems. If there is an air leak in one system, it may not affect the other.

4 . In a dual air brake system:

Air tanks are shared between both systems.

Each system has its own air tanks.

You must designate which system you are using.

There are two air brake systems in a dual air brake system. The systems share a set of brake controls, but each system has its own tanks, hoses, and lines.

5 . What is brake lag?

The time required for the brakes to work after the brake pedal is pressed

The distance between the brake pedal and the floor

The amount of air pressure used to stop the vehicle

Because air takes time to flow through the air lines to the brakes, air brakes cannot begin working instantly. There is often a brake lag of at least one-half of a second between the moment the brake pedal is pressed and the moment the brakes begin to work.

6 . If the safety relief valve in an air brake system is releasing air:

You should not be concerned as this is a normal process.

There is something wrong with the brakes.

The valve is operational.

The safety relief valve in an air brake system releases air if necessary to prevent pressure in the system from becoming too high. If the valve starts releasing air, there is something wrong. Have a mechanic fix the problem.

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2024 Washington | Frequently Asked Questions

A CDL Class B license in Washington allows the holder to operate single vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 or more pounds, or any such vehicle towing another not exceeding 10,000 pounds. This typically includes buses, dump trucks, tow trucks, delivery trucks, and straight trucks.

A Class B CDL license allows you to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or a vehicle of this size towing another not exceeding 10,000 pounds. You can drive buses, dump trucks, tow trucks, delivery trucks, garbage trucks, and straight trucks with this license.

To acquire a Class B CDL license in Washington, applicants must be at least 18 years old (21 if intending to drive interstate), possess a valid Washington state driver's license, pass a vision test, and successfully complete both a knowledge test and skills test. They also must provide proof of U.S. citizenship or lawful permanent residency.

In Washington, you must be at least 18 years old to qualify for a Class B CDL license. However, please note that you must be 21 years old or older if you intend to drive commercial vehicles across state lines (interstate driving).

Specific endorsements aren't necessary for a Class B CDL license, but they can broaden your driving opportunities. Endorsements like H (Hazardous Materials), N (Tank Vehicles), P (Passenger Transport), and S (School Bus) require additional knowledge tests. The T endorsement for double/triple trailers isn't applicable to Class B.

The Class B CDL skills assessment in Washington includes three parts: pre-trip inspection, basic vehicle control, and on-road driving. You'll need to demonstrate knowledge of your vehicle's components, show you can control your vehicle in various situations, and prove you can safely drive in normal traffic conditions.

Yes, Class B CDL license holders in Washington are limited to driving vehicles under 26,001 pounds or towing vehicles that do not exceed 10,000 pounds. They can't operate Class A vehicles unless they upgrade their license. Also, they can't drive vehicles requiring special endorsements unless they pass additional tests.

Yes, in Washington, the written Class B CDL test is available in multiple languages. However, federal regulations require all commercial drivers to read and speak English well enough to converse with the general public, understand traffic signs and signals, respond to official inquiries, and make entries on reports and records.

Yes, in Washington, if you have a disability that requires special accommodations for the Class B CDL written exam, you can request them. Accommodations may include Braille or large print exams, oral exams, or extra time. Be sure to make your request well in advance to allow for arrangements.

Yes, if you don't pass the Class B CDL written test in Washington, you can retake it. However, you must wait at least three days before attempting the test again. You'll need to pay a retesting fee each time. Remember to study thoroughly before retaking to increase your chances of passing.