Knowledge Test Class B #1
Class B Driving Test | Pennsylvania 2026 #1 Page 6 of 7
Train for FREE online with our Pennsylvania 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 PA 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.
50
40
20
36 . When inspecting engine compartment belts during the vehicle inspection test:
The applicant must identify which items are not belt-driven, if any.
When checking the engine compartment during the vehicle inspection test, you must check the power steering, water pump, alternator, and air compressor belts. In addition to cracks and frays, you should check the belts for snugness, allowing up to three-quarters of an inch of play at the center of each belt. If any of these items are not belt-driven, you must identify them and ensure that their components are operating properly, are not damaged or leaking, and are mounted securely.
37 . If a vehicle has a vehicle inspection report, the driver:
Should not conduct a pre-trip inspection and rely only on the report.
For the first step of a vehicle inspection, you should review the last inspection report on your vehicle, if there is one. The carrier should have repaired any problems noted on the report.
38 . When using a turn signal, you should not:
Allow the turn signal to stay on long after the turn has been completed.
Always signal well ahead of a turn or lane change. Signal continuously until you have completed the turn or lane change, then be sure to cancel the signal so you do not confuse other drivers.
39 . During a vehicle inspection, be sure that:
The emergency exits are not accessible from inside the cab.
During the vehicle inspection test, you must ensure that any emergency exit warning devices are working. All emergency exits should operate smoothly, be undamaged, and close securely from the inside.
40 . If a person operates in both excepted and non-excepted intrastate commerce, which type of license should the driver select?
Traditional
To operate in both excepted intrastate commerce and non-excepted intrastate commerce, you must choose a non-excepted intrastate commerce license.
41 . When inspecting underneath your vehicle for leaking fluids, you must look for all the following, except:
Windshield wiper fluid.
When approaching your vehicle before a trip, be sure to look underneath the vehicle for fresh oil, coolant, grease, or fuel leaks.
42 . Which of the following is not a serious traffic violation?
Disregarding a traffic control device
Loss of license is a potential outcome of committing serious traffic offenses. The following traffic violations are classified as serious: excessive speeding (15 mph or more above the posted limit), reckless driving, improper or erratic lane changes, following a vehicle too closely, and committing traffic offenses while driving a CMV in connection with fatal traffic accidents.
2026 Pennsylvania | Frequently Asked Questions
To secure a CDL Doubles/Triples endorsement in Pennsylvania, you must first have a Commercial Driver's License (CDL). Then, you'll need to pass the Doubles/Triples endorsement knowledge test. Study the CDL manual, particularly the section on Doubles/Triples. After passing, the endorsement will be added to your CDL. Remember, driving experience with these types of vehicles is recommended but not required.
To obtain a CDL Doubles/Triples license, you first need a Commercial Driver's License (CDL). Next, study the relevant sections of your state's CDL manual to prepare for the Doubles/Triples endorsement knowledge test. Once you pass this test, the endorsement will be added to your CDL. It's important to note that while experience driving these vehicles is beneficial, it's not required.
Specialized experience or training is not required for a CDL Doubles/Triples endorsement. However, it's beneficial to familiarize yourself with these types of vehicles. The key requirement is passing the Doubles/Triples endorsement knowledge test. Thoroughly studying the relevant sections of your state's CDL manual will help you prepare for this test. Once passed, the endorsement is added to your CDL.
Yes, an extra written test is mandatory to obtain a CDL Doubles/Triples endorsement in Pennsylvania. You will need to study the relevant sections of the Pennsylvania CDL manual and pass the Doubles/Triples endorsement knowledge test. Upon passing, the endorsement will be added to your existing Commercial Driver's License.
For the CDL Doubles/Triples endorsement in Pennsylvania, you do not need to showcase specific skills or maneuvers during a practical exam. Instead, you must pass a written knowledge test. This test primarily focuses on coupling and uncoupling, inspecting doubles and triples, and checking air brake systems. There is no practical skills test involved.
No, it's not permissible. In Pennsylvania, like all 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 appropriate endorsement can result in serious penalties, including fines, suspension of your CDL, or even jail time in some cases.
You can append the CDL Doubles/Triples endorsement to your current commercial driver's license. You do not need to initiate a new application for a separate license. However, you must pass the specific written knowledge test for this endorsement. Once passed, the Pennsylvania Department of Transportation will add the endorsement to your existing CDL.
Drivers holding a CDL Doubles/Triples endorsement in Pennsylvania must adhere to specific rules. For instance, they cannot exceed the maximum length of 100 feet for their vehicles. Additionally, they must be familiar with coupling and uncoupling procedures, as well as inspecting doubles and triples. Also, violation of traffic rules can lead to the suspension or revocation of the endorsement.
In Pennsylvania, the maximum legal weight for a vehicle is 80,000 pounds. The maximum length for a single trailer is 53 feet, while the combined length of a double/triple trailer cannot exceed 28 feet per trailer. However, these limits can vary depending on the type of road and specific local regulations. Always check with local authorities for exact restrictions.
Yes, in Pennsylvania, drivers with a CDL Doubles/Triples endorsement must follow specific safety guidelines. They should know how to couple and uncouple correctly, inspect doubles and triples, and handle emergency situations. They must also understand the dangers of "crack-the-whip" effects and prevent rollovers. Drivers should maintain safe following distances and adjust for added length and weight of the vehicle.