Setback Line : A line outside the right of way, established by public authority or private restriction, on the highway or transitway side of which the erection of buildings or other permanent improvements is controlled
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}