One strategic objective of this research project was to review the earlier draft version of the "Handbuch für die Bewertung der Verkehrssicherheit" (HVS) 2008, which set values for accident cost rate (gUKR) for road sections and traffic intersections on rural roads and motorways, along with surcharges to these accident cost rate (zUKR) from deviations from non-compliant extensions through practical review applications and, if necessary, to submit suggestions for required modifications. An example application of the standardized approach was drawn up based on the HVS draft 2008 to determine standardized accident cost rate using a large number of concrete planning measures, by which the practicality of this procedure could be assessed. Furthermore, a developed approach based on currently available information from "General Linear Modeling" (GLM) to estimate standardized accident cost rate on rural roads would be expanded within the framework of this research project, in order to be applied to motorways. It was apparent that the standardized approach of the HVS draft 2008, referring to road sections and traffic intersections on and surcharges (which result due to irregular planning), can be applied by planners responsible carrying out safety assessments, after a certain training period. The application of these procedures with selected planning steps shows that, using the model approach, very low accident cost rate on safe rural roads and motorways can be no more effectively depicted than very high accident cost rate, as can be observed at sites of frequent accident. The standardized accident cost rate, determined by the model approach developed, have a relatively narrow range. The standardized procedure model of the HVS draft 2008 is, therefore, not recommended for traffic accident prediction for individual traffic network elements. Instead, it can now better describe and quantitatively assess the effects on safety of specific design elements. The concrete recommendations resulting from the examination of the continuing development of this approach should assist the working committee 2.13 "Verkehrssicherheitsbewertung von Straßen" of the Research Association for Roads and Traffic (FGSV), and be used as the basis for further consultation. (Author/publisher)
Abstract