149People in North Carolina practiced here todayNorth Carolina CDL Doubles & Triples: Uncoupling Doubles/Triples Test 2026
15 questions on the correct order to uncouple a doubles or triples combination without losing air pressure control.
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About the North Carolina CDL uncoupling test
Breaking down a set of trailers safely takes a deliberate order, and this North Carolina CDL doubles and triples practice test for 2026 lays it out. You park on firm level ground, uncouple the rear trailer from the dolly, secure the dolly, and work forward, chocking wheels and lowering landing gear so nothing rolls or drops as you separate the units.
Questions cover the safe sequence for uncoupling a dolly and trailer, why you lower supports before releasing a fifth wheel, and how to keep the remaining trailers stable. Uncoupling a set is a required skill in the doubles and triples portion of the North Carolina CDL.
Because the doubles and triples question count varies, verify it in your North Carolina CDL Manual rather than assuming. Rehearse this uncoupling test until dropping a set safely and in order feels natural before your 2026 test.
Every question traces back to the North Carolina CDL Manual - skim the right-of-way and signs chapters before your retake.
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