Japanese Experiment Recreates a Phantom Traffic Jam
New Scientist · Demo · YouTube title: Shockwave traffic jams recreated for first time
Why it's here
It is the go-to demonstration HN links whenever traffic shockwaves, phantom jams or cascading failures come up.
What it covers
A one-minute New Scientist clip showing a Japanese experiment in which drivers on a circular track produce a spontaneous traffic jam that travels backward. It illustrates phantom traffic jams without any obstacle.