Phantom traffic jams are a documented phenomenon where gridlock appears on a highway for absolutely no discernible physical reason, entirely caused by one driver hitting their brakes just a little too hard.

A closer look

Phantom traffic jams are a documented phenomenon where gridlock appears on a highway for absolutely no discernible physical reason, entirely caused by one driver hitting their brakes just a little too hard. This microscopic overreaction creates a backward-traveling wave of deceleration that cascades through the entire line of vehicles, eventually forcing cars miles behind to come to a complete and infuriating standstill. There is no accident, no construction work, and no stray animal on the road to blame for your misery, just the collective incompetence of human beings who cannot maintain a consistent speed or following distance to save their lives. You are literally losing hours of your finite existence, listening to the same terrible radio commercials over and over, all because some guy three towns away panicked and tapped his brake pedal to look at a mildly interesting cloud formation forty-five minutes ago