Air Brakes #2
Air Brakes Endorsement Test | Washington 2024 #2 Page 3 of 4
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 2024, 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.
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13 . A safety valve is set to open at ____ pounds per square inch (psi).
The safety valve protects air tanks and the rest of an air brake system from accumulating too much air pressure. The safety valve is usually set to open at 150 psi.
14 . If air pressure drops to a level between ____, a visual low pressure warning signal should have already activated.
A visual low pressure warning signal should activate before air pressure drops to a level between 55 and 75 psi. This signal could be a light, a buzzer, or a wig wag.
15 . Brakes can get out of adjustment quickly, especially:
Brakes are particularly prone to getting out of adjustment if they are hot. Be sure to routinely check the adjustment of your brakes. For a vehicle to be safely controlled, all brakes must be properly functioning and adjusted.
16 . ____ make up the emergency brake system.
In an air brake system, there are three different braking systems: a service brake system, a parking brake system, and an emergency brake system. The emergency brake system uses parts of both the parking and service brake systems.
17 . A wig wag is:
Vehicles with air brakes are required to be equipped with a low pressure warning device. A wig wag is a type of low air pressure warning device. This device drops a mechanical arm into the driver's view if the pressure in the tanks drops to a level between 55 and 75 psi.
18 . Why do large vehicles use air brakes?
If used and maintained properly, air brakes are a safe and effective way to stop large, heavy vehicles.
See the exact questions that will be on the 2024 Washington DMV exam.
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2024 Washington | Frequently Asked Questions
To secure a CDL Doubles/Triples endorsement in Washington, you must first possess a valid CDL. Then, you should study the Doubles and Triples section of the Washington CDL Handbook. After studying, schedule and pass the written knowledge test at a Washington Department of Licensing office. Lastly, pay the required endorsement fee to add it to your license.
To obtain a CDL Doubles/Triples license, you must first have a basic CDL. You will then need to study for and pass the Doubles/Triples endorsement test, which covers specific knowledge related to driving these types of vehicles. This includes understanding the handling and safety procedures. Finally, you'll pay any required fees for the additional endorsement on your license.
While formal experience isn't required for a CDL Doubles/Triples endorsement, you must possess a valid Commercial Driver's License (CDL). It's recommended to study the CDL manual and take practice tests. Understanding coupling/uncoupling, inspecting doubles/triples, and checking air brakes is essential. Passing the Doubles/Triples endorsement knowledge test is the final step.
Yes, to obtain a CDL Doubles/Triples endorsement, you must pass the Doubles/Triples endorsement knowledge test. This test covers topics like coupling and uncoupling, inspecting doubles and triples, and checking air brakes. There is no additional driving skills test required beyond the standard CDL exam.
The CDL Doubles/Triples endorsement test primarily focuses on knowledge rather than specific driving maneuvers. You'll need to understand coupling and uncoupling, inspecting doubles and triples, and managing the high risk of rollover. Additionally, you'll need to know about pulling double/triple trailers, as well as the implications of crashes. The test is written, not practical, so no driving skills are showcased.
No, it is not permissible. In Washington, like in all states, a valid CDL Doubles/Triples endorsement is required to legally operate double or triple trailers. Driving these vehicles without the necessary endorsement can lead to serious penalties including fines and suspension of your commercial driving license.
You can append the Doubles/Triples endorsement to your existing CDL. You don't need to initiate a new application for a CDL. However, you must pass the Doubles/Triples knowledge test. Once you pass, the endorsement is added to your CDL, allowing you to legally operate double and triple trailers.
Yes, there are limitations for drivers with a CDL Doubles/Triples endorsement. They can only operate double or triple trailers. Also, these drivers must comply with all federal and state regulations regarding commercial vehicle operation, including weight limits, logbook rules, and safety inspections. Any violation can lead to penalties or revocation of the endorsement.
In Washington State, double trailers can't exceed a combined length of 61 feet and triple trailers can't exceed 75 feet. As for weight, the maximum gross vehicle weight (including all axles) is 105,500 pounds. However, individual axle weights can't exceed limits set by federal bridge laws. Always check specific state and federal regulations.
Yes, there are specific safety guidelines and regulations for driving double/triple trailers with a CDL Doubles/Triples endorsement in Washington. These include maintaining proper spacing between trailers, using proper turning techniques, and adhering to weight restrictions. It is important to follow these guidelines to ensure the safe operation of double/triple trailers on the road.
