Edge Drop-Off 1 : A pavement defect where the vertical distance from the surface at the edge of a seal to the surface of the shoulder exceeds acceptable limits (e.g. 10-15 mm)
Peter Milne and Kieran Sharp, ARRB Group, and Bob Ungers, consultant, Austroads Glossary of Terms (4th Ed.), Austroads Ltd., Sydney, NSW, Australia 2010. http://www.bicyclensw.org.au/files/u1/Austroads_Gl ossary_of_Terms_4th_edition.pdf (Road Trfc and Transp Sfty - Brit) {529}