NH CDL General Knowledge study materials
NH CDL General Knowledge study resources

NH CDL General Knowledge: Shifting, Backing, and Turning

NH CDL General Knowledge · Work through your exam, one topic at a time.

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Shifting, Backing, and Turning

Shifting, Backing, and Turning

This domain tests smooth gear control, safe reversing, and turns that keep a long vehicle out of trouble. The exam looks for judgment about space, visibility, and off-tracking, not just memorized gear patterns.

Core rules

  • Shift progressively and match engine speed to road speed. Do not coast with the clutch depressed or in neutral; you need power and control. Avoid shifting while turning or crossing railroad tracks.
  • Before backing, use GOAL: get out and look. Use a spotter when available, roll down a window, check both mirrors, and back slowly. If you lose sight of the spotter, stop. Back toward the driver's side when possible for better visibility.
  • In a right turn, approach in the right lane, swing left only enough to keep the trailer wheels off the curb, and watch the right mirror. In a left turn, do not cut the corner; the rear wheels track inside the front wheels.

Worked example

A 53-foot trailer is turning right into a narrow driveway. The driver stays in the right lane, delays the turn, and swings slightly left. The rear trailer wheels still track about 10 feet inside the path of the tractor's front wheels. Reasoning: the driver must allow for off-tracking, keep the trailer clear of the curb, and check the right mirror throughout the turn rather than cutting early.

Traps that cost marks

Backing without a spotter or without walking around first; relying only on mirrors; cutting corners because the tractor clears; shifting during a turn; and coasting downhill in neutral.