Operating a motor vehicle at a distance too close to another vehicle, not allowing adequate space for safe stopping or reaction to sudden changes in speed or traffic conditions.
Determining Safe Following Distance:
A safe distance varies by speed, weather, road conditions, and vehicle size. The general guideline is the Three-Second Rule, which means a driver should remain at least three seconds behind the vehicle ahead. This allows enough time to react and stop safely.
To calculate distance in feet, the following formula can be used:
There are 5,280 feet in one mile.
Multiply your speed (MPH) by 5,280 to determine feet per hour.
Divide that number by 60 (minutes per hour) to get feet per minute.
Divide again by 60 (seconds per minute) to get feet per second.
Multiply that result by 3 to determine a three-second safe following distance.
Example:
At 65 MPH:
(5,280 × 65) ÷ 60 ÷ 60 × 3 = 285 feet (recommended minimum distance).
Determining Safe Following Distance:
The appropriate following distance is determined case-by-case, taking into consideration the following factors:
Weather conditions (rain, fog, snow, or reduced visibility).
Vehicle size and weight (larger or heavier vehicles require more stopping distance).
Road conditions (wet, icy, or uneven surfaces).
Speed of travel (higher speeds increase stopping distance).
Driver visibility and reaction time.
Penalty: