Knowledge Test Class B #1
Class B Driving Test | Maryland 2026 #1 Page 5 of 7
Train for FREE online with our Maryland 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 MD CDL class B permit in 2026, 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 . When changing lanes:
Always use your turn signals and check your mirrors when changing lanes.
30 . A liver can process about ____ per hour.
The faster you drink, the higher your blood alcohol content (BAC) will become. The liver removes alcohol from a body at a fixed rate of about one drink per hour.
31 . Wheel rims that have been welded should:
Wheels or rims that have had welding repairs are not safe to be used.
32 . Before driving a vehicle with air brakes, you should ensure that the spring brakes come on automatically when:
Driving uphill.
Before driving a vehicle with air brakes, you should ensure that the spring brakes come on automatically when air tank pressure falls to a level between 20 and 45 psi. You can do this by chocking the wheels and releasing air from the braking system by stepping on and off the brake pedal. Once the pressure drops to an unsafe level, the parking brake valve should pop out and spring brakes should come on.
33 . What is a drawback of retarders?
A retarder is a device that helps to slow a vehicle, reducing the need for a driver to use the brakes. However, these devices can be noisy and are not permitted everywhere.
34 . If driving through flowing water or a large puddle, you should:
It is best to avoid driving through large puddles or moving water. If there is no way to avoid driving through water, you should slow down, shift into a low gear, and gently apply the brakes. Pressing linings against the brake drums or discs will keep water, mud, silt, and sand from getting inside the brake mechanisms.
35 . When braking while ABS is activated, you should:
Brake softer than you normally would.
In a vehicle equipped with an Anti-Lock Braking System (ABS), you should apply the brakes in the same manner that you would if you were driving without ABS.
See the exact questions that will be on the 2026 Maryland DMV exam.
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2026 Maryland | Frequently Asked Questions
To secure a CDL Doubles/Triples endorsement in Maryland, you need to have a valid Commercial Driver's License (CDL). Then, you must pass the Doubles/Triples endorsement knowledge test administered by the Maryland Motor Vehicle Administration (MVA). Studying the CDL manual and taking practice tests can help prepare for this examination.
To obtain a CDL Doubles/Triples license, you must already hold a Commercial Driver's License (CDL). Then, you need to pass the Doubles/Triples endorsement knowledge test. You're required to understand safety procedures, coupling and uncoupling, inspecting doubles and triples, and pulling double/triple trailers. It's recommended to study the CDL manual and take practice tests for preparation.
While specialized experience or training is not a legal requirement for a CDL Doubles/Triples endorsement, it's highly beneficial. Knowledge of safety procedures, coupling and uncoupling, and inspecting doubles and triples is crucial. Studying the CDL manual and taking practice tests can provide this knowledge. Some applicants may choose to attend a training school for practical experience.
Yes, to obtain a CDL Doubles/Triples endorsement in Maryland, you must pass the Doubles/Triples endorsement knowledge test. This written test covers information specific to driving vehicles with double or triple trailers. Studying the CDL manual and taking practice tests is highly recommended to prepare for this exam.
The CDL Doubles/Triples endorsement test in Maryland is primarily a written knowledge test. It focuses on specific rules and safety aspects of handling multiple trailers, such as coupling and uncoupling, inspecting doubles and triples, and managing the vehicles during various driving conditions. It does not typically include a skills or driving test showcasing specific maneuvers.
No, it is not permissible to operate double or triple trailers without a valid CDL Doubles/Triples endorsement in Maryland. Operating such vehicles without the appropriate endorsement can result in fines, license suspension, and potentially criminal charges. This endorsement ensures that drivers have the necessary knowledge and skills to safely operate these larger vehicles.
In Maryland, you can append the Doubles/Triples endorsement to your current Commercial Driver's License (CDL). You do not need to initiate a new application for a CDL. However, you will need to pass the Doubles/Triples endorsement knowledge test and pay the required fees to add this endorsement to your existing CDL.
Yes, there are some limitations for drivers holding a CDL Doubles/Triples endorsement in Maryland. For instance, drivers are required to follow specific rules regarding the coupling and uncoupling of trailers, length and weight of the trailers, and speed limits. Moreover, any traffic violation or unsafe driving behavior can result in the suspension or revocation of the endorsement.
In Maryland, a CDL Doubles/Triples endorsement allows drivers to operate vehicles with a Gross Vehicle Weight Rating (GVWR) over 26,001 pounds. However, specific weight and length restrictions can vary based on federal and state regulations. Generally, the maximum length for each trailer is 28.5 feet, and the combined weight (including cargo) cannot exceed 80,000 pounds without a special permit.
Yes, there are specific safety guidelines for driving double/triple trailers with a CDL Doubles/Triples endorsement in Maryland. These include adhering to weight and length restrictions, proper coupling and uncoupling of trailers, maintaining a safe following distance, and understanding the high rollover risk. Additionally, drivers are required to regularly inspect their vehicles and secure all cargo according to regulations.
