“…A literature analysis was performed to determine which indicators may be relevant in a road safety context. Safety is not exclusively determined by road characteristics but it also depends on the interactions between several elements and can be defined using the elementary triangle of road safety: road, human and vehicle (Sarrazin et al, 2011;Colonna, 2002). A schematic overview of road safety indicators is also presented by (Hermans et al, 2008) which provides a construction process of composite road safety performance considering the following: alcohol and drugs, protective system, vehicle, speed, daytime running lights, infrastructure and trauma care (Janssen, 1991).…”