NY CDL Combination study guide
NY CDL Combination · Work through your exam, one topic at a time.
The New York CDL Combination Vehicles knowledge test is the written exam that covers Section 6 of the New York State Commercial Driver's Manual, published by the DMV as document CDL-10. The combination vehicles test is required for drivers who want to operate a Class A combination vehicle: a tractor-trailer or a truck towing one or more trailers. The NY CDL Combination study guide has 5 sections and about 1,893 words.
01Combination Vehicle Inspection and Coupling/Uncoupling
New York's CDL Combination knowledge test checks whether you can inspect a tractor-trailer as a system and couple or uncouple it without relying on luck. The exam favors sequence questions: what must be true before the tractor moves, and what proves the fifth wheel is locked.
425 words, about 2 min02Driving Combination Vehicles: Turning, Tracking, and Off-Tracking
Combination driving questions test whether you can predict where the trailer will go before the tractor gets there. The exam focuses on off-tracking, swept path, mirror use, and turn setup.
385 words, about 2 min03Braking and Air Brake Systems on Combination Vehicles
Air brake questions on the Combination exam test system knowledge and braking judgment: what the red and blue lines do, what pressure protects the trailer, and why a loaded tractor-trailer needs more room. Red line is the emergency/supply line; blue is the service line.
391 words, about 2 min04Rollover Risks, Speed Control, and Safe Operating Practices
Rollover and speed-control questions test whether you understand why a combination vehicle turns over and how to prevent it before the curve arrives. A loaded tractor-trailer has a high center of gravity.
353 words, about 2 min05Skid Recovery, Jackknifing, and Emergency Procedures
Skid and emergency questions test recognition and the first correct action. The exam wants you to identify which wheels are skidding, release the cause, and steer without making the jackknife worse.
339 words, about 2 min