The main requirement for the upgrading road infrastructure safety is the implementation of a comprehensive analysis in terms of road safety. Greek legislation (Presidential Decree104/2011) in line with the European Directive 2008/96/EC, as amended by Directive 2019/1936/EC, plans to implement Road Infrastructure Safety Management (RISM) for the road network of Greece. To prevent accidents, one of the primary RISM procedures is the Road Safety Audit (RSA) technique. This paper addresses the RSA findings on a national of 4-lane road network in Greece, as a re-active approach to identifying safety issues and infrastructure deficiencies. The interurban road Thessaloniki - Nea Moudania is part of the A24 motorway, which length is 56 km and practically connects the prefecture of Thessaloniki with the prefecture of Halkidiki. The study was at the framework of a graduate thesis of Civil Engineering Department of the Aristotle University of Greece. Following the audit carried out, it was found that most of the problems relate to passive safety systems, signage, visibility issues, the condition of pavement and the characteristics of junctions.

road safety audit, accidents, human factor