Knowledge Test Class B #1
Class B Driving Test | Washington 2026 #1 Page 5 of 7
Train for FREE online with our Washington class B license 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 CDL class B permit in 2026, 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 CDL class B requirements may vary from state to state.
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29 . When loading cargo, it is important to:
It is a driver's responsibility to make sure their vehicle is not overloaded. They must be aware of legal weight limits and the maximum weight that their vehicle is rated to carry, including the weight capacity rating of the suspension system.
30 . If the low air pressure warning signal comes on in a vehicle with air brakes, the driver should:
If the low air pressure warning signal comes on while you are operating a vehicle with air brakes, you should stop and safely park the vehicle as soon as possible. It is essential that you are able to stop safely while you still have some braking power remaining.
31 . Not using a safety belt while driving:
You must always wear a safety belt while operating a commercial motor vehicle. Driving a CMV without being properly restrained by a safety belt is both illegal and dangerous.
32 . A driver may restart a period of seven or eight consecutive days on duty:
In Washington State, there are limits to the number of hours a driver may drive during a seven- or eight-day period. A commercial driver who reaches the end of a duty period may begin a new seven- or eight-day period after taking at least 34 consecutive hours off.
33 . If an aggressive driver is involved in a crash on the road ahead, you should:
If you see a crash involving an aggressive driver, you should stop a safe distance from the crash scene, wait for police to arrive, and inform them of the aggressive behavior you witnessed.
34 . Regrooved tires:
Regrooved, recapped, or retreaded tires are prohibited on the front wheels of a bus.
35 . The air storage tanks:
The air storage tanks in an air brake system store compressed air to be used for braking. They hold enough air for the brakes to still be used several times if the compressor stops working.
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2026 Washington | Frequently Asked Questions
A CDL Class A license in Washington is defined as a commercial driver's license that allows the holder to operate any combination of vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, given that the GVWR of the vehicle(s) being towed is in excess of 10,000 pounds.
A Class A Commercial Driver's License (CDL) in Washington allows the holder to operate any combination of vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, provided the GVWR of the vehicle(s) being towed exceeds 10,000 pounds. This includes but is not limited to tractor-trailers, truck and trailer combinations, and tank vehicles.
To obtain a Class A CDL license in Washington, you must be at least 18 years old (21 for interstate driving), possess a valid Washington state driver's license, pass a vision test, and pass knowledge and skills tests. You'll also need to provide proof of U.S. citizenship or lawful permanent residency, and meet medical requirements.
In Washington, you must be at least 18 years old to qualify for a Class A Commercial Driver's License (CDL) for intrastate driving (within Washington only). However, federal regulations require drivers to be at least 21 years old to drive a commercial vehicle interstate (across state lines) or to haul hazardous materials.
While not always required, specific endorsements may be necessary for a Class A CDL license depending on the type of vehicle you'll operate or cargo you'll carry. These can include endorsements for double/triple trailers, tanker vehicles, passenger vehicles, or hazardous materials. Each endorsement requires additional knowledge tests and sometimes a skills test.
The Class A CDL skills test in Washington encompasses three parts: the pre-trip inspection, basic vehicle controls, and on-road driving. The pre-trip inspection checks your ability to assess your vehicle's safety. Basic vehicle controls assess your ability to maneuver and control the vehicle. The on-road driving test evaluates your driving skills in various traffic situations.
Yes, Class A CDL license holders in Washington may face limitations based on their specific endorsements and restrictions. For instance, without the proper endorsements, they cannot operate vehicles with air brakes, transport passengers, or haul hazardous materials. Additionally, restrictions may be placed on licenses due to medical conditions or lack of skills.
Yes, it is possible to take the written Class A CDL test in languages other than English in Washington. The Department of Licensing offers the test in several languages. However, federal regulations require anyone applying for a commercial driver license (CDL) to understand and read English to ensure safety on the roads.
Yes, you can request accommodations for the Class A CDL written test if you have a disability. Washington's Department of Licensing is committed to providing equal access to its services. If you have special needs, contact your local driver licensing office to discuss your situation and determine what accommodations can be made.
If you don't pass the Class A CDL written test in Washington, you can retake it. However, you must wait at least one day before retaking the test. Keep in mind that there may be additional fees for each attempt. It's advisable to study thoroughly before retaking the test to increase your chances of passing.
