Signal Priority : Transit signal priority either gives or extends a green signal to transit buses under certain circumstances to reduce passenger travel times, improve bus schedule adherence, and reduce bus operating costs
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}