Question

question 5 of 10
a simple and accurate way to calculate a safe following distance is to apply:
1.
a certain number of car lengths in relation to your speed.
2.
a certain number of feet per mile an hour of speed.
3.
following distance in feet calculated in relation to your speed.
4.
following time, a certain number of seconds behind a preceding vehicle.

Explanation:

The safe following distance is commonly calculated using the "3 - second rule" (or a certain number of seconds behind a preceding vehicle). Car lengths and feet - per - mile - per - hour methods are less accurate or less commonly used as standard methods. The "following time, a certain number of seconds behind a preceding vehicle" is the simple and accurate way.

Answer:

1. Following time, a certain number of seconds behind a preceding vehicle.