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

Uncoupling a set is where careless sequencing does real damage, and this California CDL doubles and triples uncoupling test makes you get the order right. You uncouple the rear trailer first: secure it, lower its landing gear, close the shut-off valve and disconnect the lines, release the dolly's fifth wheel and pull the dolly clear.

Then the dolly itself comes off - safety chains, air lines, pintle hook - and only after that do you deal with the front trailer. This 2026 doubles and triples uncoupling practice test asks about level ground, chocking, why landing gear should not be lowered onto soft or sloped surfaces, and how to park a dolly so it cannot roll.

The California CDL Manual spells out the same sequence and is the place to confirm the number of questions on California's doubles and triples exam. Do not carry over a count you read for another state - California DMV sets its own.

Keep going:

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

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