Network Safety Management A FrenchGerman Cooperation Kerstin LEMKE

Network Safety Management – A French-German Co-operation Kerstin LEMKE Federal Highway Research Institute (BASt) Pascal CHAMBON Roads and Motorways Engineering Dept. (Sétra) François GANNEAU Roads and Motorways Engineering Dept. (Sétra) 1

French-German Elysée Treaty (1963) Co-operation in • Politics • Public Services • Science Source : Bundesbildstelle, Berlin Exchange of experience on safety analysis of existing road networks 2

National Guidelines 3

Improving Safety of Existing Road Networks Know Understand Act Evaluate ACCIDENT DATABASE ANALYSIS DIAGNOSIS AND DEVELOPMENT OF MEASURES RANKING AND IMPLEMENTATION OF MEASURES ASSESSMENT OF MEASURES 4 NSM

Methodology Requirements Road administrations have to determine poor road sections/itineraries where possible improvements will be highly cost-efficient. Methodology for accident analysis has to Þ be based on costs (Euros) Þ provide a ranking of sections for further analysis 5

Accident Rate 0 - 0, 06 (n=1158) 0, 06 - 0, 25 (n=3661) 0, 25 - 0, 42 (n=360) 0, 42 - 0, 72 (n=106) Accidents 106 veh • km 0, 72 and more (n=37) Accidents with personal injury on German motorways 2002 6

Accident Cost instead of Number number of accidents accident cost severity • joint analysis of accidents of different severity • consideration of different casualty structures • basis for cost-benefit analysis 7

Safety Potential actual accident cost per km target accident cost per km = safety potential = accident cost per kilometre that could be saved by improvement measures = accident cost to be compared with costs for measures (cost-benefit analysis) 8

Safety Potential 50 - 105 (n=671) 105 - 250 (n=555) 1000 Euro km 250 and more (n=187) Accidents with personal injury and serious damage-only accidents on German motorways 2001 -2003 9

Ranking of sections/itineraries Basis for further analysis, development of measures and assessment 10

Improving Safety of Existing Road Networks Ranking of sections/itineraries Understand Act Evaluate NSM DIAGNOSIS AND DEVELOPMENT OF MEASURES RANKING AND IMPLEMENTATION OF MEASURES ASSESSMENT OF MEASURES 11

Network safety management • highlights worst performing sections/itineraries • provides a priority ranking of sections/ itineraries to be further analysed and improved • permits a direct comparison: potential savings in accident costs vs. costs of improvement measures • focuses on longer sections/itineraries complements Black Spot Management • coincides with EU Commission’s definition 12

Where do we stand now? Germany: • Safety potential map for motorways (since 2003) • Pilot for all interurban roads in one state (2006) France: • Method applied at national level (2005) • Feedback on trials • 16 M€ available for 2006 13

References • “Network Safety Management (NSM)” http: //www. sure. equipement. gouv. fr/IMG/pdf /NSM_V_FD_final_cle 55 ec 71 -1. pdf • „Guidelines for Safety Analysis of Road Networks (ESN)“, FGSV, Germany 2003. http: // www. bast. de • “User Safety on the Existing Road Network (USER)”, http: //www. sure. equipement. gouv. fr 14