New Jersey CDL Combination Vehicles: Uncoupling Test 2026

Dropping a trailer badly is expensive, and the New Jersey CDL combination uncoupling test exists to make the sequence automatic. Position the rig straight, ease the pressure off the locking jaws, set the trailer brakes, lower the landing gear until it takes weight, disconnect and stow the air lines and the electrical cord, pull the fifth wheel release, then pull forward clear of the landing gear before you drive away.

The questions probe the reasons rather than the order alone: why the ground under the landing gear matters at a Turnpike distribution yard, why you never leave the trailer supported by the fifth wheel, and what a crank handle left unsecured can do on the road.

This is original practice built from the uncoupling chapter of your New Jersey CDL Manual, not copied exam content. That manual also carries the exact number of combination vehicle questions for 2026, a figure the New Jersey MVC sets at state level, so look it up rather than guessing.

Keep going:

• New Jersey CDL Combination Practice Test
• New Jersey CDL Combination Practice Test 2
• New Jersey CDL Combination Practice Test 3
• New Jersey CDL Combination Vehicles Test
• New Jersey CDL Practice Test
• New Jersey Air Brakes Practice Test
• New Jersey CDL Pre-Trip Inspection Practice Test
• New Jersey Hazmat Practice Test
• New Jersey Class A CDL Practice Test
• New Jersey CDL Practice Test

Every question traces back to the New Jersey CDL Manual - skim the right-of-way and signs chapters before your retake.