In a double or triple, the more heavily-loaded trailer should be immediately behind the tractor.

The heaviest trailer should be positioned directly behind the cab.

Cargo weight must be evenly distributed between all trailers.

The heaviest trailer should be positioned directly behind the cab.

The heaviest trailer should be positioned in the rear.

The weight of the trailers does not matter.

A vehicle being equipped with anti-lock brakes on only the tractor or only the trailer provides additional control during braking.

The tractor and trailer can still be used together.

The truck should not be driven because ABS needs to be on both the tractor and trailer.

The truck should be driven more slowly than usual.

The tractor should not be used and a new tractor with ABS should be located.

The tractor and trailer can still be used together.

Double and triple trailer combinations are more likely to turn over due to the "crack-the-whip" effect than are other combination vehicles. Drivers should be aware of the rearward amplification of their specific vehicles and steer accordingly.

Doubles and triples are more likely to turn over than other combination vehicles.

A combination vehicle will make a loud noise if driven fast enough.

The tires on a middle trailer will lock up at all stops.

Vehicles following a truck will be able to travel faster than normal.

Bicyclists are considered vehicle operators and, with certain exceptions, must obey the same laws as other traffic. They may ride on the shoulder or berm, but are not required to do so. They may also travel at less than the minimum posted speed limit without being cited for a traffic violation.

Expected to obey all traffic laws.

Required to ride on the shoulder, if available.

Required to ride at the maximum speed limit or they will face an impeding traffic charge.

Expected to obey all traffic laws.

A posted speed on a curve may be safe to be driven when operating a straight truck or a single-trailer combination but unsafe to be driven in a double or triple.

Could be too fast to be driven in a double or triple.

Is likely acceptable to be driven in a double or triple.

Is the minimum speed that should be driven in a double or triple.

Could be too fast to be driven in a double or triple.

Should be increased when driving a double or triple.

Brakes heat up with use. If they are overused and become too hot, expansion and chemical changes will make them less effective and eventually cause them to stop working altogether. This is known as "brake fade."

The brakes will become extra sensitive.

The air compressor will kick on to cool the brakes.

Double Triple Test | Pennsylvania 2025 #2 Page 2 of 3

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 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 DMV requirements may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 20

Double Triple Test | Pennsylvania 2025 #2 Page 2 of 3

8 . In a double or triple combination:

9 . If an Anti-Lock Braking System (ABS) is equipped on a trailer but not on a tractor:

10 . Due to the "crack-the-whip" effect:

11 . Bicyclists are:

12 . A speed limit posted on a curve:

13 . When inspecting underneath your vehicle for leaking fluids, you must look for all the following, except:

14 . If the brake pads rub against the brake drums and create too much heat:

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