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Overview of the New Highway Safety Manual

Overview of the New Highway Safety Manual. Tim Neuman , CH2M Hill NCHRP 17-38 Project Member. May 1, 2009 Chicago, Illinois . 2009 Strategic Highway Safety Plan Peer Exchange SCOHTS Annual Meeting. Presentation Summary. 1. 2. 3. 4. 5. Overview of the new HSM. I. WHAT IS THE HSM?.

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Overview of the New Highway Safety Manual

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  1. Overview of the New Highway Safety Manual Tim Neuman, CH2M Hill NCHRP 17-38 Project Member May 1, 2009 Chicago, Illinois 2009 Strategic Highway Safety Plan Peer Exchange SCOHTS Annual Meeting

  2. Presentation Summary 1 2 3 4 5

  3. Overview of the new HSM I. WHAT IS THE HSM?

  4. WHAT IS THE HSM?

  5. The Vision of the HSM - A Document Akin To the HCM 1 2 3

  6. What the HSM is NOT vs • The HSM does not set requirements or mandates • The HSM isnot a best practice document for design or operations. • The HSM contains no warrants or standards and does not supersede other publications that do.

  7. The HSM does not establish a legal standard of care nor does it create a duty to the public.

  8. Overview of the new HSM II. Why Do We Need the HSM?

  9. Is This Road “Safe” or “Unsafe”? What does safety really mean?

  10. Highway Safety Has Two Dimensions Examined in reference to compliance with standards, warrants, guidelines and sanctioned design procedures The expected or actual crash frequency and severity for a highway or roadway *Ezra Hauer, ITE Traffic Safety Toolbox Introduction, 1999

  11. Unlike Nominal Safety, Substantive Safety is a Continuum

  12. Substantive Safety May Vary When Nominal Safety Does Not Alternative 1 Existing Conditions Alternative 3 Alternative 2

  13. We’re Interested in Other Impacts for Project Level Decisions – What About Substantive Safety? • GEOPAK Plans • Cost Models • Real estate appraisals • DOT databases • HCM • CORSIM • PASSER • TRANSYT7F • VISSIM Design Criteria (nominal safety) • Traffic Noise Model 1.0 • CAL3QHC • Mobile 5a • 3-D Visualization • CITYGREEN The HSM More quantitative Greater weight Safety Environmental Traffic Right-of-Way Costs Impacts Impacts Operations

  14. The HSM Contains Best Science & Research • Synthesis of previous research • New research commissioned by AASHTO and FHWA

  15. Overview of the new HSM III. HOW WAS THE HSM DEVELOPED?

  16. The HSM – A Ten-year Research And Development Effort 1999 2000 2003 2007 2010 Future Research, research and more research

  17. Joint Subcommittee sponsored by 7 TRB committees Thousands of hours of volunteer effort Research program funded by NCHRP, AASHTO & FHWA Significant Effort & Professional Support Produced the HSM

  18. Research Path to the HSM v.1

  19. Overview of the new HSM IV. What is Covered by the HSM?

  20. Outline of the HSM

  21. PART AIntroduction, Human Factors, & Fundamentals

  22. Part BRoadway Safety Management Process Prioritization of Improvement Projects Countermeasure Selection Network Screening 6 7 9 5 8 4 Safety Effectiveness Evaluation Diagnosis Economic Appraisal

  23. Part CPredictive Method • Methodology • Applications • Safety issues not explicitly addressed by the methodology • Example problems • References • Calibration • Combining predicted with observed crashes Special Part C Common Procedures

  24. Part DAccident Modification Factors

  25. Overview of the new HSM V. WHO SHOULD USE THE HSM?

  26. Who Should Use the HSM?

  27. Assess the system needs & identify projects/studies • Program projects • Evaluate system-wide safety effects of programs

  28. Define problem(s) and assist in scoping • Identify potential solutions • Assess or evaluate multiple alternatives and expected quantitative safety effects • Aid in identification of a preferred alternative

  29. Evaluate safety of alternative design approaches • Assist in review & documentation of design exceptions, variances and waivers • Inform decisions on construction staging, work approaches, etc.

  30. Monitor operations to maintain balance among safety, mobility and access. • Evaluate the effectiveness of implemented improvements

  31. Overview of the new HSM VI. When Will the HSM be Available?

  32. Implementation Schedule

  33. Companion Software

  34. Training & Outreach Activities • Sept – Nov 2009 • Conduct two or three multi-state pilot courses • August 2009 • TRB Task Force Meeting • TRB 2010 Annual Meeting • One-day workshop • Training materials, including “Train-the-trainer” available upon HSM release

  35. Overview of the new HSM VII. Where Can One Find More About the HSM?

  36. http://www.highwaysafetymanual.org

  37. http://www.highwaysafetymanual.org DATA NEEDS GUIDE

  38. Key Contacts • AASHTO • Ken Kobetsky: kenk@aashto.org, (202) 624-5254 • Jim McDonnell: jimm@aashto.org, (202) 624-5448 • Implementation • Geni Bahar (User Liaison Subcommittee of the TRB HSM Task Force): genibahar@rogers.com, (416) 932-9272 • Training • Karen Dixon (PI of NCHRP 17-38): karen.dixon@oregonstate.edu, (541) 737-6337

  39. The End Questions?

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