How is measuring the distance important for road safety?

A new driver may wonder exactly how much distance

to keep between their car and the car in front of them. Drivers

must always be prepared for the car in front of them to stop, slow

down, or encounter unexpected road debris.

Since road conditions and speed obviously play a

factor, there is no perfect answer. Under normal driving

conditions, a common tool used to determine a proper following

distance is the 3-second rule.