Radio-Controlled Engine : An unmanned engine within a train that is separated by rail cars from the lead unit but controlled from it by radio signals; also called slave unit
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}