Bus Testing : Originally drafted in 1989, the Federal Transit Administration (FTA) Bus Testing regulations mandate that all transit vehicle models purchased with FTA money must undergo testing at FTA's Altoona, Pa. bus testing site
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}