Knowledge Test Class B #2
Class B Driving Test | Oregon 2025 #2 Page 4 of 7
Train for FREE online with our Oregon 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 OR CDL class B permit 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 CDL class B requirements may vary from state to state.
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22 . Brake fading is caused when:
Brakes are wet.
Using the brakes excessively will cause them to overheat, making them less effective. This is referred to as "fading."
23 . What is the minimum permitted size of a placard?
32 square inches
Hazardous materials must be diamond-shaped and a size of at least 10 ¾ square inches.
24 . After starting the engine as part of a pre-trip inspection, the driver should:
Check your engine during the pre-trip inspection. After starting the engine, you should listen for unusual noises.
25 . Before driving a power steering-equipped vehicle, you should make sure that:
When inspecting a vehicle that is equipped with power steering, check the hoses, pumps, and fluid level. In particular, you should look for leaks in the hoses.
26 . What kind of force do emergency brakes use?
Air brakes are really three different braking systems: the service brake, the parking brake, and the emergency brake. Emergency and parking brakes are applied with mechanical force.
27 . The air storage tanks:
Hold enough air for more than 1,000 braking cycles.
In an air brake system, the air storage tanks hold enough air for brakes to be used several times if the compressor stops working.
28 . When using your turn signal, you should:
Always begin signaling well in advance of a turn. This is the best way to ensure that other drivers do not try to pass you. Without using a turn signal, drivers may assume that you are merely slowing down or stopping when you are planning to turn.
See the exact questions that will be on the 2025 Oregon DMV exam.
99.2% of people who use the cheat sheet pass the FIRST TIME
Lillian MCcranie explains how our CDL study guide was helpful in passing the exam and recommends it to everyone.
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2025 Oregon | Frequently Asked Questions
To secure a CDL Doubles/Triples endorsement in Oregon, you must first hold a valid Oregon CDL. Next, study the Oregon CDL manual's sections on doubles/triples. After preparation, schedule and pass the written knowledge test at your local DMV. Once passed, the endorsement will be added to your CDL. Remember, specific training may be required by your employer.
To obtain a CDL Doubles/Triples license, you must first have a valid Commercial Driver's License (CDL). Then, study the relevant sections of your state's CDL manual, focusing on handling and safety rules for double/triple trailers. After studying, schedule and pass the written knowledge test at your local DMV. Upon passing, the endorsement is added to your CDL.
While Oregon doesn't require specific training to obtain a CDL Doubles/Triples endorsement, you must have a valid CDL. It's crucial to study the CDL manual's sections on double/triple trailers. Passing the written knowledge test at your local DMV secures the endorsement. However, employers may require further specialized training for handling double/triple trailers safely.
Yes, to obtain a CDL Doubles/Triples endorsement in Oregon, you must pass an additional written knowledge test. This exam focuses on specific regulations and safety considerations for driving double and triple trailers. Studying the relevant sections of your state's CDL manual will help you prepare for this test.
For the CDL Doubles/Triples endorsement in Oregon, no specific skills or maneuvers need to be demonstrated as there is no practical skills test. The endorsement requires only a written knowledge test. This exam covers topics like coupling and uncoupling, inspecting doubles and triples, and managing the vehicles' stability.
No, it's not permissible. In Oregon, like in many other states, you must have a valid CDL with a Doubles/Triples endorsement to legally operate double or triple trailers. Driving such vehicles without the proper endorsement can result in significant fines, license suspension, and even legal penalties.
You can add the CDL Doubles/Triples endorsement to your existing commercial driver's license. This process does not require a new application for a CDL. However, you will need to pass the Doubles/Triples written knowledge test and pay the necessary endorsement fee to have this added to your license.
Drivers with a CDL Doubles/Triples endorsement must adhere to specific regulations. These include weight restrictions, proper coupling and uncoupling of trailers, and managing vehicle stability. Also, the endorsement does not allow the operation of tank vehicles or those carrying hazardous materials unless additional endorsements are obtained. Violation of these restrictions can result in fines or loss of the endorsement.
In Oregon, the maximum weight for double/triple trailers is 105,500 pounds, and the maximum length is 61 feet for twins and 75 feet for triples. These measurements include the load and any vehicle or object transported. However, note that these limits can vary depending on the type of road (Interstate vs non-Interstate) and specific local regulations.
Yes, drivers with a CDL Doubles/Triples endorsement must adhere to specific safety guidelines. These include regular vehicle inspections, proper coupling and uncoupling of trailers, and maintaining safe following distances. Additionally, drivers must comply with all federal and state laws regarding hours of service, use of safety equipment, and cargo securement. Violations can result in fines or loss of endorsement.
