About the Study Guide

You are looking at a preview of what’s in the timed Idaho Offroad Ed Course. Feel free to look around, but you’ll need to register to begin progress toward getting your Idaho OHV Safety Education Certificate.

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Sight Distance

  • Sight distance means the distance from which you can see and identify a hazard. You often see an object before you’re able to identify it as a hazard.
  • If the stopping distance to an object is greater than the sight distance, you’re in danger of hitting the object.

Reaction Time and Distance

  • Reaction time is the time it takes you to react to a hazard. It involves these steps:
    • Seeing something
    • Recognizing it’s a hazard
    • Deciding whether to brake or steer around the object
    • Reacting
  • Reaction distance is the distance the ATV travels during your reaction time.
    • The distance depends on the reaction time (in seconds) and speed (in feet per second).
    • It is calculated as: Reaction Distance = Reaction Time x Speed
  • Accidents occur in just a few seconds, so think of your speed in feet per second (multiply mph by 1.46667).
    • 15 mph = 22 ft. per second
    • 30 mph = 44 ft. per second
    • 45 mph = 66 ft. per second
    • 60 mph = 88 ft. per second
  • At 30 mph with a reaction time of three seconds, the reaction distance is 132 feet (3 sec. x 44 ft./sec.).