Pennsylvania Driver's Examination

Air Brakes #2

FREE Air Brakes Endorsement Test Online | Pennsylvania 2024

Train for FREE online with our Pennsylvania CDL air brake 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 Class A/Class B driver license in 2021, 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 the requirements for CDL may vary from state to state.

Number of Question 25

Passing Score 20

Number of Tests 20

1 . What happens if the air pressure in a system's air tanks falls below 60 psi?

A warning light will come on.

The vehicle will not shift out of gear.

The front lights will flash.

The vehicle should stop.

In an air brake system, a low pressure warning signal should activate if the pressure in the air tanks falls to a level below 60 psi. This signal may be in the form of a warning light or a wig wag.

2 . What does the air compressor governor do?

Controls when the air compressor pumps air into the air storage tanks.

Controls how quickly air leaves the air storage tanks.

Controls the temperature of the air entering the air storage tanks.

Controls the temperature of the air leaving the air storage tanks.

In an air brake system, the air compressor governor controls when the air compressor pumps air into the air storage tanks.

3 . When only the tractor is equipped with an Anti-Lock Braking System (ABS):

There is a decreased risk of jackknifing.

There is an increased risk of jackknifing.

The brakes will not work as effectively as they would without ABS.

The brakes will become more sensitive.

If a tractor is equipped with an Anti-Lock Braking System (ABS) but the trailer is not, the risk of jackknifing will be reduced and the driver should still be able to maintain steering control. If only the trailer is equipped with ABS, it is less likely that the trailer will swing out to one side.

4 . Service brakes should:

Be tested once a month.

Only be tested by a trained mechanic.

Be tested before every trip.

Before driving, you should always verify that your service brakes are in good working order. Testing the brakes before a trip allows you to locate any problems before you need to brake while on the road.

5 . In cold weather, an alcohol evaporator should be checked and filled:

Once a week.

Every day.

Every hour.

Once a month.

An alcohol evaporator can help prevent ice from building up in an air brake system. In cold weather, the evaporator should be checked and refilled every day.

6 . What kind of force must emergency brakes use?

Air pressure

Mechanical

Heavy

Electrical

Because air pressure can eventually leak away, the emergency brakes in an air brake system must be held on by mechanical force.

Study tip:

Reduce your study time from hours to minutes with a DMV exam “Cheat Sheet”

99.2% of people who use the cheat sheet pass the FIRST TIME

Click Here
Full Cheat Sheet

99.2%

99.2% of people who use the cheat sheet pass the FIRST TIME

2024 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.