Knowledge Test Class B #1
Class B Driving Test | Virginia 2025 #1 Page 5 of 7
Train for FREE online with our Virginia 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 VA 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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29 . If the air pressure in an air brake system becomes too low, it may:
If the pressure in an air brake system becomes too low, the brakes will no longer work. If the low pressure warning signal activates, you should leave the road and stop safely while you still have braking power.
30 . What is often found in compressed air?
Compressed air in an air brake system usually contains a certain amount of water and compressor oil. The water and oil can damage the brakes if left to accumulate in the system. Tanks must be drained regularly to remove this build-up.
31 . A hazardous materials endorsement will be revoked if a person:
You will be denied a HazMat endorsement, or lose an existing endorsement, if you are not a lawful permanent U.S. resident; you renounce your U.S. citizenship; you are wanted for, under indictment for, or convicted of certain felonies; you are judged as mentally unstable or are committed to a mental institution; or you are deemed to pose a security threat by the Transportation Security Administration (TSA).
32 . Confused drivers:
Confused drivers can be hazardous because they may change directions suddenly. If someone is driving with hesitation or continues to stop unexpectedly, they may be confused. Out-of-state license plates or luggage on top of a car may indicate that the driver is a tourist who is unfamiliar with the area.
33 . When making a left turn, you should start the turn:
When making a left turn, you should wait until you reach the center of the intersection before actually beginning to turn. Due to off-tracking, the left side of your vehicle could hit another driver if you begin turning too early.
34 . Emergency equipment, such as fire extinguishers, are:
All commercial motor vehicles must carry appropriate emergency equipment, including fire extinguishers.
35 . A cracked rim should be:
A driver should inspect wheels before a drive, specifically looking for damage on the wheels and rims. Wheels or rims that have had welding repairs are not safe for use.
See the exact questions that will be on the 2025 Virginia DMV exam.
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2025 Virginia | Frequently Asked Questions
In Virginia, to secure a CDL Doubles/Triples endorsement, you must have a valid Commercial Driver's License (CDL). Start by studying the appropriate section in the Virginia CDL manual. Then, pass the written knowledge test at a DMV customer service center. You must also pass a skills test in a vehicle representative of the type you'll be driving.
To obtain a CDL Doubles/Triples license, you need a valid Commercial Driver's License (CDL). You must study the Doubles/Triples section in the CDL manual, pass a written knowledge test at your local DMV, and complete a skills test in a vehicle similar to what you plan to drive. This endorsement is required to drive vehicles pulling two or three trailers.
While Virginia doesn't mandate specialized experience or training for a CDL Doubles/Triples endorsement, it's recommended. You must have a valid CDL, pass the written knowledge test, and successfully complete a skills test in a representative vehicle. Practical training can help with these tests and safely operating such vehicles. Always check with your local DMV for specific requirements.
Yes, to obtain a CDL Doubles/Triples endorsement in Virginia, you must pass an additional written knowledge test specifically for this endorsement. This test covers topics like coupling and uncoupling, inspecting doubles and triples, and managing cargo. The test is based on the Doubles/Triples section in the CDL manual. No extra driving exam is required if you already hold a CDL.
For the CDL Doubles/Triples endorsement in Virginia, you don't have to perform a specific driving test. However, the written test covers important topics including coupling/uncoupling procedures, inspecting doubles/triples, and managing cargo. Understanding these skills is critical for safety. It's beneficial to practice these maneuvers even though they are not part of a specific driving test.
No, it's not permissible to operate double or triple trailers without a valid CDL Doubles/Triples endorsement in Virginia. The endorsement is a legal requirement that ensures you have the necessary knowledge and skills to safely operate such vehicles. Driving without the proper endorsement can result in hefty fines and penalties.
In Virginia, you can add the CDL Doubles/Triples endorsement to your existing commercial driver's license. You don't need to initiate a new application for a CDL. However, you'll need to pass the Doubles/Triples knowledge test and pay an applicable fee to add this endorsement to your current CDL.
Yes, even with a CDL Doubles/Triples endorsement, there are restrictions. In Virginia, drivers can only operate doubles/triples on specific highways and during certain hours. Also, the total weight of the trailers cannot exceed the Gross Vehicle Weight Rating. Drivers must also comply with all federal and state laws regarding rest periods and hours of service.
In Virginia, the maximum weight limit for double/triple trailers is 80,000 pounds. The maximum length for a double trailer is 61 feet for the two trailers combined, while the maximum length for a triple trailer combination is 75 feet. These limits can vary depending on the road type and may be subject to change based on state regulations.
Yes, there are specific safety guidelines for driving double/triple trailers. Drivers must ensure the securement of the cargo and conduct pre-trip inspections. They must also maintain a safe following distance, avoid sudden stops or lane changes, and understand the high rollover risk. Virginia adheres to Federal Motor Carrier Safety Regulations, which provide extensive safety rules for commercial vehicles.
