Editing Multiple-vehicle collision (section)

{{Short description|Road traffic accident involving many vehicles}}
{{redirect|Pileup}}
{{Use dmy dates|date=December 2020}}
[[File:Multi vehicle accident - M4 Motorway, Sydney, NSW (8076208846).jpg|thumb|right|270px|Aftermath of a multi-vehicle collision on the [[M4 Western Motorway|M4 Motorway]] in [[Sydney]], Australia]]
A '''multiple-vehicle collision''' (colloquially known as a '''pileup''' or '''multi-car collision'''),<ref name=Abel>{{cite news|last=Abel|first=David|title=On busy travel day, black ice led to massive pileup in Worcester|url=https://www.bostonglobe.com/metro/2013/12/02/icy-roads-lead-vehicle-crash-worcester/oYuQa0J96S8qRykY1a9AyM/story.html|access-date=2013-12-03|newspaper=The Boston Globe|date=2 December 2013}}</ref> is a road [[traffic collision]] involving many [[automobile|vehicles]]. Generally occurring on high-capacity and high-speed routes such as [[freeway]]s, they are one of the deadliest forms of traffic collisions. The most disastrous pileups have involved more than a hundred vehicles.