Originally Posted by ColdCase
If you are a very conservative driver, the warning distance may seem too short to you, but I think its perfect for me. Two car lengths is a lot at 40 mph.
In the old days, at any rate, we were taught that there should be one car length separation for every 10 mph. It's not just a question of braking distance, but also of having enough "slack" so the driver can focus primarily on the road ahead and traffic behind, not mainly on the car immediately in front.