Track Car : A self-propelled rail car (e.g. burro crane, highway rail car, detector car, weed burner, tie tamper) that may or may not operate signals or shunt track circuits
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}