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FREE Double Triple Test Online | Pennsylvania 2024

Train for FREE with our Pennsylvania CDL double triple practice test online. 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 double triple license in 2021, practice as much as..

Train for FREE with our Pennsylvania CDL double triple practice test online. 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 double triple 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 DMV requirements may vary from state to state.

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1 . Which part of a combination vehicle is the most likely to turn over?

The last trailer The "crack-the-whip" effect makes the last trailer in a combination the most likely to turn over. Be especially careful when operating a double or triple combination vehicle around a turn or corner.

2 . If a vehicle gets stuck on a railroad track, the driver should:

Wait in the vehicle for a law enforcement officer to arrive. If your vehicle gets stuck on railroad tracks, immediately exit the vehicle and get away from the tracks. Check signs or signal housing at the crossing for emergency contact information. Call the emergency contact or call 911.

3 . When coupling a triple trailer rig:

The order in which trailers are coupled is not important. When coupling a triple trailer rig, you should first couple the trailer immediately behind the cab. Connect the second and third converter dollies and trailers in order.

4 . Doubles and triples:

Always have the right-of-way. Due to their size, doubles and triples cannot be turned suddenly. They require extra care to avoid rollovers when turning.

5 . What happens when you push in the trailer air supply control knob?

Air brakes are applied. To send air to the emergency (supply) lines, a driver can push in the trailer air supply control knob. The knob is red and eight-sided.

6 . If an Anti-Lock Braking System (ABS) malfunctions:

The brakes will not work. On a vehicle with ABS, a yellow malfunction lamp on the instrument panel will illuminate to alert you if the braking system is not working.

7 . To stop in a vehicle that uses air brakes, the driver should:

Pull the brake pedal up. To make a normal stop in a vehicle with air brakes, push the brake pedal down. The harder the pedal is pressed, the more air pressure is released.

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