Platform (Station Time) : The period during which an operator is charged with the operation or care of a vehicle, including deadhead, layover, and other times the vehicle may be in operation but not in passenger service
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}