Washington CDL Doubles & Triples: Uncoupling Doubles/Triples Test 2026

Uncoupling a doubles or triples combination reverses the coupling process, and this drill covers the order Washington's CDL exam expects - starting from the rearmost trailer and working forward, setting brakes and lowering landing gear at each stage before disconnecting.

Expect questions about what happens if a driver uncouples out of order, how to confirm each remaining unit's brakes are holding before disconnecting the next set of air lines, and where converter dollies should be parked once separated. Uncoupling sequence questions test discipline as much as memory.

Work through this uncoupling drill step by step and verify the order against your Washington CDL Manual wherever you're unsure. A doubles and triples combination that's uncoupled correctly, unit by unit, is one that stays safe in the yard as well as on the road.

Keep going:

• Washington Doubles and Triples Practice Test
• Washington Doubles and Triples Practice Test 2
• Washington Doubles and Triples Endorsement Test
• Washington CDL Practice Test
• Washington Air Brakes Practice Test
• Washington CDL Combination Practice Test
• Washington CDL Pre-Trip Inspection Practice Test
• Washington Hazmat Practice Test
• Washington CDL Practice Test

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