Watch FMovies. A shadowy man in black warns viewers of the perils of forgetting to follow the simple two second rule - that is, keeping a sufficient distance from the car ahead when driving. Directed by John Krish, who made numerous similarly macabre films, this is one of three public information films produced as a series on public road safety. The images from the series may no longer be familiar to everyone, but the slogan is still in use today.