Air Brakes #1
Air Brakes Endorsement Test | Pennsylvania 2025 #1 Page 2 of 4
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 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 the requirements for CDL may vary from state to state.
25
20
20
7 . When only the tractor is equipped with an Anti-Lock Braking System (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.
8 . Before a vehicle with dual air brakes is driven, pressure of at least ____ should be built up in both braking systems.
100 psi
Before driving a vehicle with a dual air brake system, allow time for the air compressor to build up pressure of at least 100 psi in both the primary and secondary systems.
9 . What happens if the air pressure in a system's air tanks falls below 60 psi?
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.
10 . When you press the brake pedal in a vehicle with S-cam brakes, air pressure pushes out the rod and moves the:
Alcohol evaporator.
When pressing the brake pedal in a vehicle with S-cam brakes, air will enter the brake chambers. The added air pressure will push out the rods and move slack adjusters, twisting the brake camshafts.
11 . Pressing and releasing a brake pedal unnecessarily can:
Create a loud noise.
In an air brake system, pressing and releasing the brake pedal unnecessarily can release air from the braking system faster than the compressor can replace it.
12 . What can happen if the air pressure gets too low in an air brake system?
The brakes will be very sensitive.
Pressing and releasing the brake pedal unnecessarily can let air out faster than the compressor can replace it, reducing the available air pressure. If the air pressure in an air brake system gets too low, the brakes will no longer work.
Search the best driving school in your neighbourhood
2025 Pennsylvania | Frequently Asked Questions
To get a CDL Hazmat endorsement in Pennsylvania, first obtain a Commercial Driver's License (CDL). Then, pass the Hazardous Materials Endorsement Knowledge Test. After passing, you'll need to undergo a federal TSA background check. Once cleared, take your test results and TSA clearance to PennDOT to have the Hazmat endorsement added to your CDL.
To obtain a CDL Hazmat license, you must first have a Commercial Driver's License (CDL). You must also be at least 21 years old, be a U.S. citizen or have legal status, and be able to read and speak English. Additionally, you'll need to pass a Hazardous Materials Endorsement Knowledge Test and a TSA background check.
When applying for a CDL Hazmat endorsement, you'll need your current Commercial Driver's License (CDL), proof of U.S. citizenship or legal status (like a passport or birth certificate), and a completed Hazardous Materials Endorsement application. You'll also need to provide your TSA background check results once they're available.
Yes, there is a dedicated written test for the CDL Hazmat endorsement. The Hazardous Materials Endorsement Knowledge Test covers information related to transporting hazardous materials safely. This includes understanding hazard classifications, placarding rules, loading and unloading procedures, and emergency response procedures. It's important to study thoroughly to pass this test.
The written test for the CDL Hazmat endorsement covers a variety of topics related to hazardous materials. These include identifying different types of hazardous materials, understanding shipping papers and placards, knowing how to safely load and unload hazardous materials, understanding the rules for transporting hazardous materials, and knowing what to do in case of an emergency situation.
Yes, there are additional charges associated with obtaining a CDL Hazmat endorsement. You'll need to pay for the TSA background check, which costs around $86.50. Additionally, the Pennsylvania Department of Transportation charges a fee for adding the Hazmat endorsement to your CDL, which is typically $5.00. However, these fees can vary and may change over time.
Yes, obtaining a CDL Hazmat endorsement in Pennsylvania requires a background check. The Transportation Security Administration (TSA) conducts this check to ensure you're not a security risk. This process includes fingerprinting and checking criminal, immigration, and mental health records. Only after passing this check can you receive your Hazmat endorsement.
Yes, specialized training is required for the CDL Hazmat endorsement. Applicants must pass a written test covering topics such as loading and unloading hazardous materials, bulk tank loading, and driver responsibilities. After passing the test, they are granted the Hazmat endorsement on their CDL. It's important to study the Pennsylvania CDL manual's hazardous materials section to prepare.
No, you cannot legally transport hazardous materials without a valid CDL Hazmat endorsement in Pennsylvania. This endorsement ensures that drivers have the necessary knowledge and skills to safely handle and transport hazardous materials. Violating this regulation can result in hefty fines, license suspension, or even imprisonment.
Yes, you can add the CDL Hazmat endorsement to your current CDL license in Pennsylvania. You don't need to apply for a new license. However, you must pass the Hazmat knowledge test and undergo a TSA background check. Once these are successfully completed, the Hazmat endorsement will be added to your existing CDL.
