Multiple Unit (MU) Car : Two or more units or connected pairs of rail cars equipped so that all cars in the train may be operated from any car that has an operator's station
Ilan Kelman (ed.), Vulnerability and Resilience Definitions and References, Version 2, 2007. http://www.islandvulnerability.org/docs/vulnres.pd f, (Vulnr and Resilience - Brit) {524}