Track 02 : (1) An assembly of rails, ties and fastenings over which cars, locomotives and trains are moved; and (2) the width of a wheeled vehicle from wheel to wheel and usually from the outside of the rims
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}