Betterment : The improvements, adjustments, or additions to a highway which more than restore it to its former good condition and which result in better traffic serviceability without major changes in its original construction
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}