Network Safety Management

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Network Safety Management A French-German
Co-operationKerstin LEMKEFederal Highway
Research Institute (BASt) Pascal CHAMBONRoads
and Motorways Engineering Dept.(Sétra) François
GANNEAU Roads and Motorways Engineering
Dept.(Sétra)
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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
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National Guidelines
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Improving Safety of Existing Road Networks
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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

• be based on costs (Euros)
• provide a ranking of sectionsfor further analysis

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Accident Rate
Accidentswith personal injuryon German
motorways2002
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Accident Cost instead of Number
number of accidents
severity

• joint analysis of accidents of different severity
  
• consideration of different casualty structures
• basis for cost-benefit analysis

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Safety Potential
actual accident cost per km
- target accident cost per km
safety potential

• accident cost per kilometre that could besaved
  by improvement measures
• accident cost to be compared withcosts for
  measures (cost-benefit analysis)

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Safety Potential
50 - 105 (n671)
105 - 250 (n555)
250 and more (n187)
Accidents with personal injury and serious
damage-only accidents on German motorways
2001-2003
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Ranking of sections/itineraries
Basis for further analysis, development of
measures and assessment
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Improving Safety of Existing Road Networks
Ranking of sections/itineraries
NSM
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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 Commissions definition

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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

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References

• Network Safety Management (NSM)
  http//www.sure.equipement.gouv.fr/IMG/pdf/NSM_V_F
  D_final_cle55ec71-1.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