Knowledge Test Class B #2
Class B Driving Test | Oregon 2025 #2 Page 3 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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15 . The use of a hand-held mobile device while driving is:
Using a hand-held mobile telephone while operating a CMV is both illegal and dangerous.
16 . How many daily hours of sleep does an adult need to maintain alertness?
Four to five
Being properly rested is essential to the safe operation of a CMV. To maintain alertness, most people need seven to eight hours of sleep per night.
17 . To confirm that a trailer has ABS, you can:
Remove a tire and look for the ABS sensor on the axle.
If you are unsure if a trailer is equipped with an Anti-Lock Braking System (ABS), look under the vehicle for the electronic control unit and wheel speed sensor wires coming from the back of the brakes.
18 . Most heavy vehicles require ____ to change gears.
Triple shifting
Most heavy vehicles with manual transmissions require double clutching to change gears. A driver should release the accelerator, push in the clutch, and shift into neutral at the same time. After releasing the clutch and allowing the vehicle to change to the necessary speed, the driver should push in the clutch, shift gears, then simultaneously release the clutch and accelerate.
19 . Pre-trip inspections:
A vehicle inspection should be completed in the same order every time. This will make it easier for you to learn all of the steps and will make it less likely that you will forget to check something.
20 . What can happen if the exhaust system is not working properly?
Leaks in an exhaust system are extremely dangerous because they may allow toxic fumes into the cab or sleeper berth, endangering drivers and passengers.
21 . Why do large vehicles use air brakes?
Air is free.
Air brakes are an effective and safe way of stopping large and heavy vehicles, as long as they are maintained and used properly.
2025 Oregon | Frequently Asked Questions
In Oregon, a CDL Class A license is defined as a commercial driver's license that allows the holder to operate any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more, provided the vehicle(s) being towed have a GVWR of more than 10,000 pounds. It covers vehicles like tractor-trailers, truck and trailer combinations.
A Class A CDL license in Oregon allows the holder to operate vehicles such as tractor-trailers, truck and trailer combinations, tank vehicles, livestock carriers, and flatbeds. Essentially, it covers any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more, if the towed vehicle(s) weigh over 10,000 pounds.
To obtain a Class A CDL license in Oregon, you must be at least 18 years old (21 for interstate driving), hold a valid Oregon driver's license, pass a vision test, and a knowledge test. You also need to pass a skills test, which includes pre-trip vehicle inspection, basic vehicle control, and on-road driving. A medical examination is also required.
To qualify for a Class A CDL license in Oregon, you must be at least 18 years old. However, you need to be at least 21 years old if you intend to drive across state lines or transport hazardous materials. It's essential to note that these age requirements are set by federal law and apply nationwide.
Endorsements are not required for a Class A CDL license, but they can enhance your license. They allow you to drive special types of vehicles such as tank vehicles, passenger vehicles, and vehicles carrying hazardous materials. To obtain an endorsement, you need to pass additional knowledge and skills tests related to the specific type of vehicle.
The Class A CDL skills test in Oregon includes three parts: a pre-trip vehicle inspection test to check your ability to assess the safety of your vehicle, a basic vehicle control test to evaluate your control over the vehicle in various situations, and an on-road driving test to assess your ability to safely operate the vehicle in traffic.
Yes, there can be limitations for Class A CDL license holders in Oregon. These could include restrictions based on medical evaluations, or limitations for drivers under 21, who are not allowed to operate commercial vehicles outside of Oregon. Also, specific endorsements are required for certain types of cargo or vehicles, like hazardous materials or passenger vehicles.
Yes, Oregon DMV offers the written Class A CDL test in several languages besides English. However, federal regulations require that all commercial drivers demonstrate proficiency in English to ensure safety on the roads. This includes reading road signs, communicating with law enforcement, and understanding driving regulations. Therefore, even if the test is taken in another language, some English proficiency is necessary.
Yes, Oregon DMV provides reasonable accommodations for individuals with disabilities taking the Class A CDL written test. These may include sign language interpreters, extended time, or a separate testing room. You should contact the DMV in advance to discuss your needs and make sure appropriate arrangements can be made for your test.
Yes, if you fail the Class A CDL written test in Oregon, 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 retake. It's recommended to study thoroughly to increase your chances of passing on the next attempt.