Safety of characteristic subsections of roadwork sites on motorways

摘要

The research project conducted by the German Insurers Accident Research consisted of an analysis of the statistics in the vicinity of all roadwork sites on German motorways (autobahns). Road accidents recorded by the police for a period of at least 12 months at 76 selected roadwork sites and a retrospective accident analysis of 12 completed motorway roadwork sites were macroscopic analyzed. In addition, a microscopic analysis of the accident occurrence was carried out of eight existing roadwork sites with a total length of 57 km and included also the analysis of the driving behavior of car and truck drivers throughout the length of the roadwork sites and/or in characteristic subsections in or near them. The results of the research project confirm that accidents at roadwork sites on motorways are generally accidents involving minor damage to property. The study shows different accident rates and accident cost rates for some characteristic subsections along the roadwork site. Nevertheless, there are problem areas in terms of road safety, particularly at the beginning and end of roadwork sites, lane realignment points, carriageway changeover points and temporary slip roads. These characteristic subsections of roadwork sites have an influence on the road safety. The same applies to the impact of how the traffic is routed, the length of the roadwork site or specific road equipment (e.g. road signs against a yellow background).