On long trips, you can prevent drowsiness by:

  1. Turning on your car radio.
  2. Slowing down.
  3. Stopping at regular intervals for a rest. ✓
  4. Moving your eyes from side to side as you drive.

Answer: C. Stopping at regular intervals for a rest.

Stopping at regular intervals for a rest is the way to prevent drowsiness on long trips.

Why this is the answer

The New York manual tells drivers to schedule regular stops for every 100 miles or two hours before a long trip, and it also says to plan frequent rest stops on long trips. That makes stopping at regular intervals for a rest the supported way to prevent drowsiness. The manual does not list the radio, slowing down, or eye movements as ways to prevent it.

Why the other answers are wrong

Remember it

Plan the trip around rest stops, not around tricks to stay awake.

Official handbook: New York State Driver's Manual (MV-21), Chapter 8: Defensive Driving – Drowsy and Fatigued Driving

Explanation drafted with AI (deepseek-flash) from the official handbook passage cited above, then checked automatically and by a second model on 2026-10-23. Always confirm with the official handbook.