3 seconds
It is more like car length than seconds when following another car. You should be at least 2 car lengths from the other car.
Allow a minimum of 3 seconds of braking distance at 55 MPH, add an extra second for each 5 MPH increase in speed.
At least 2 seconds behind the vehicle in front of you is recommended. More in bad weather/road conditions.
You should be 2-3 seconds behind a given point that the vehicle in front just passed. At 65 mph, that is 95 feet per second, so multiply by 2 or 3 and you should be 190-280 feet behind
The universally accepted answer to this is: 2 seconds in normal driving conditions (good weather & dry roads) and 5 seconds in inclement weather (ie: snow and icy roads). Pick a stationary object by the side of the road (such as a telephone or hydro pole) and use it as the guage of measure. When yhr vehicle ahead passes it (lets use the pole), say out loud " 1, one thousand, 2, onethousand". you should have finished saying that before you reach the same pole or other marker.
100 ft4 seconds
You should always remain a safe distance when you are behind another vehicle. The recommended amount of space that you should leave is one and half car lengths.
a driver behind your vehicle is trying to pass you
It is called the disabled vehicle. This name is adopted in the tech world.
The same distance you should be behind any vehicle. 3 seconds is what most experts recommend on dry pavement. In heavy traffic, at night, or when weather conditions are not ideal (eg. light rain, light fog, light snow), double the three second rule to six seconds, for added safety. If the weather conditions are very poor, eg. heavy rain, heavy fog, or heavy snow, start by tripling the three second rule to nine seconds to determine a safe following distance.
tailgate