Why three buses come at once, and how to avoid it

Anyone who has waited for a bus knows the routine: you wait far longer than you should, then three come along at once. The problem, called "platooning", plagues buses, trains and even elevators.

Evident la noi vin atat de rar ca iti faci cruce cand apare unul dar imi amintesc problema asta de cand eram mic si mergeam la scoala cu tramvaiul.

Articol:http://www.newscientist.com/article/dn18074-why-three-buses-come-at-once-and-how-to-avoid-it.html