The two-second rule is a way for a driver to maintain a safe following distance at any speed. The rule is that a driver should ideally stay at least two seconds behind any vehicle that is directly in front of them.

You do it by spotting a landmark, such as a light pole or street sign, then count "one thousand one, one thousand two." If you reach the landmark before you get to two, you are too close. The interesting thing is that the distance shortens and lengthens based on your speed to keep you just 2 seconds away from rear ending someone.

And how do you know that, you may ask. Several sessions of safe driving classes, but I was never there for a rear ender :-). Oh, and if you are over 60, you can get a discount on your car insurance if you take the class (they don't ask you why you took the class, just if you took the class)