2
3 seconds
2
2 seconds is the safe distance.
In any driving location, it is generally agreed to be safe if you position yourself 3 seconds or more behind the vehicle in front of you.
5 seconds
4 seconds
a good rule of thumb, is to back off at least 1 car for every 10 miles per hour that your driving. this way, if theres a problem up ahead. you will have time to try and stop.
4
It is a lot easier to count seconds than to estimate distance.
1m
A safe distance, depending on road and weather conditions, would be 2 - 3 seconds
Three seconds