Tank Endorsement Test | Washington 2025 #1

Train for FREE with our Washington tank endorsement practice test online. 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 tank license in 2025, 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 DMV requirements for issuing a CDL tank vehicle endorsement may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 20

1 . Of the following, which is not a recommended way to spot potential signs of trouble?

Watching the gauges

Using your senses

Checking critical items only at the beginning and end of a trip

During a trip, you should regularly make checks to ensure that your vehicle is operating properly. Check the instrument panel and gauges; look at your mirrors; and examine the tires, cargo, and lights. Use all of your senses and be alert for anything that could be an early indication of trouble.

2 . Having anti-lock brakes on only one axle:

Will not make a difference in braking.

Will provide increased control in braking.

Will likely cause the air brakes to malfunction.

If a vehicle has anti-lock brakes on just one axle, the driver will still have more control during braking than they would without any anti-lock brakes.

3 . Unsafely reaching for a phone is:

Acceptable if you are driving without a passenger.

Acceptable if you plan to use a hands-free feature.

Unacceptable even if you plan to use a hands-free feature.

If you must use a mobile phone while driving, it must be in close proximity to you and easily reachable while you are securely fastened into your seat. It is dangerous and non-compliant to unsafely reach for a mobile phone, even if you plan to use a hands-free feature when speaking on the phone.

4 . Load hazardous materials:

Near heat sources.

Away from heat sources.

Away from shadows.

Always load hazardous materials away from heat sources. Be aware of regulations on explosive or flammable materials that prohibit them from being loaded in cargo spaces with heaters.

5 . If an aggressive driver is involved in a crash down the road, you should:

Pull over and yell at them.

Stop after the crash scene and report the other driver’s behavior to police.

Block the driver in with your vehicle.

If you observe 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.

6 . If you identify hazardous materials leaking while you are driving, you should:

Continue driving to find a phone booth and call the National Response Center.

Park the vehicle.

Leave the area to find help.

If you discover that a cargo of hazardous materials is leaking from your vehicle, you should park the vehicle as soon as possible. The longer you continue driving, the longer the trail of contamination becomes. While this creates potential danger and harm to others, it also increases clean-up expenses.

7 . Before a trip, you can make sure air flows to all trailers by:

Checking for moving air inside of each trailer.

Listening for air at the rear shut-off valve.

Feeling for air at the front shut-off valve.

Before a trip, ensure that air in the air brake system reaches all trailers. Do this by waiting for air pressure to build, then sending air to both the emergency and service lines and opening the shut-off valves on the rear of the last trailer. If air escapes from the shut-off valves in the rear of the combination, the air is being supplied to the entire vehicle.

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2025 Washington | Frequently Asked Questions

To acquire a CDL Passenger endorsement in Washington, you must first have a valid Washington CDL. Complete a Passenger Endorsement Application and pass the Passenger Endorsement Knowledge Test at a Washington Department of Licensing office. After passing, you'll need to complete a skills test in the type of vehicle you'll be driving. Fees apply for each step.

To obtain a CDL Passenger license, you must have a valid Commercial Driver's License (CDL). You must also pass the Passenger Endorsement Knowledge Test and the Skills Test which includes pre-trip vehicle inspection, basic vehicle control, and on-road driving. Furthermore, you need to clear a federal background check. Training courses are also recommended before testing.

Yes, you will need specific training and experience to secure a CDL Passenger endorsement in Washington. You must have a valid Washington CDL and pass a knowledge test specifically for the Passenger endorsement. Additionally, you may need to complete a skills test and provide proof of training or experience in operating passenger vehicles.

Yes, for a CDL Passenger endorsement, you need to pass the Passenger Endorsement Knowledge Test. This is a written test that focuses on the special skills and knowledge necessary for safely transporting passengers. It covers topics like vehicle inspection, loading and trip start, on the road, after-trip vehicle inspection, prohibited practices, and use of brake-door interlocks.

During the CDL Passenger endorsement assessment, you'll need to demonstrate pre-trip vehicle inspection skills, basic vehicle control, and on-road driving. You'll need to show your ability to load and unload passengers safely, respond appropriately to emergency situations, operate special features for passengers, and conduct post-trip vehicle inspections.

No, you cannot legally transport passengers commercially without a valid CDL Passenger endorsement in Washington. This endorsement is required for drivers who wish to drive a vehicle designed to carry 16 or more passengers, including the driver. Driving without the proper endorsement can result in legal penalties.

You can add the CDL Passenger endorsement to your existing license in Washington. You will need to complete a new application and pay the required fees. Additionally, you will need to pass the knowledge test and, if applicable, the skills test for the Passenger endorsement. Once you meet all the requirements, the endorsement will be added to your CDL.

Yes, drivers with a CDL Passenger endorsement must adhere to federal and state regulations. These include compliance with hours-of-service laws, maintaining a logbook, regular vehicle inspections, and alcohol and drug restrictions. Moreover, drivers cannot transport more passengers than the vehicle's designated capacity or leave passengers unattended in a vehicle that isn't secure.

Yes, to acquire a CDL Passenger endorsement in Washington, you must be at least 21 years old. This is due to federal regulations which state that all commercial drivers operating a vehicle across state lines must be at least 21. However, those aged 18-20 may obtain a CDL for intrastate driving (within Washington only).

With a CDL Passenger endorsement in Washington, you will be eligible to operate various types of vehicles. This includes vehicles designed to transport 16 or more passengers, including the driver. Examples of eligible vehicles include buses, vans, and shuttles used for public transportation, schools, and other passenger transportation services. It is important to note that specific requirements and restrictions may apply based on the type and size of the vehicle.