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Implementing the Highway Safety Manual

Implementing the Highway Safety Manual. Jon Nelson, P.E. Sr. Traffic Studies Specialist Missouri Department of Transportation. Knowing is not enough; we must apply. - Leonardo da Vinci. Science-based, q uantitative research. Synthesis of previous research

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Implementing the Highway Safety Manual

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  1. Implementing the Highway Safety Manual Jon Nelson, P.E. Sr. Traffic Studies Specialist Missouri Department of Transportation

  2. Knowing is not enough; we must apply. - Leonardo da Vinci

  3. Science-based, quantitative research • Synthesis of previous research • New research commissioned by AASHTO and FHWA (peer reviewed through the National Academies)

  4. The Need of the HSM • Quantify safety; a decision-making tool • HCM • CORSIM • PASSER • TRANSYT7F • VISSIM • TNM ver 2.5 • CAL3QHC • Mobile 5a • 3-D Visualization • CITYGREEN • GEOPAK Plans • Cost Models • Real estate appraisals • DOT databases ? • HSM More Importance More Quantitative Safety Environmental Traffic Operations Right-of-Way Costs Impacts Impacts

  5. Missouri’s Implementation Plan • Obtain support materials • Increase understanding within MoDOT • Establish an HSM implementation team • Schedule training • Integrate into MoDOT process • Provide technical support • Other issues

  6. Support Materials • Obtain the HSM (10 free) • SafetyAnalyst • www.safetyanalyst.org • Interactive Highway Safety Design Model (IHSDM) • www.ihsdm.org • CMF Clearinghouse • www.cmfclearinghouse.org • HSM PowerPoint

  7. Increase Understanding • Meet with senior management • Meet with Chief Counsel’s Office • Meet with division directors • Planning • Design • Traffic • Meet with district engineers • Present at division meetings

  8. Establish Implementation Team • Representatives from affected areas • Planning • Design • Traffic • Highway Safety • District representation • Help facilitate acceptance/use of HSM • Serve as liaisons

  9. Schedule Training • Implementation Team • HSM webinars (FHWA Resource Center) • Familiarity • Hands-on Workshops (2-day) • FHWA/NHI • Completed once; will host again in fall • Calculations, practice problems, exams, etc. • Show them how it works. • Keep it simple. • Develop in-house training (1-day)

  10. Integrate Into Process • Project Development • Project selection • Design Alternatives • Design Exceptions • Best value

  11. Integrate Into Process • Safety assessments of existing facilities • Determine need for countermeasures • Select & evaluate optimal countermeasures • Striping, signing, shoulders, rumbles, etc.

  12. Provide Technical Support • Central Office support of districts • HSM lead contact • Super Users • Adapt to Missouri conditions/data • Safety Performance Functions • Calibration factors

  13. Other Issues • Continue training opportunities • HSM Lead State Initiative • NCHRP Project 17-50 • Expand awareness to outside partners • Local agencies • Knowledge • Training • Materials

  14. Challenges • Communicating the need • Not “extra work” • Don’t complicate the process • Making HSM analysis routine • Environmental, simulations, etc. • Overcoming liability concerns • Adjusting to your state’s conditions • Appropriate usage • Drive down the numbers • System-wide approach

  15. Challenges • Accompanying software • SafetyAnalyst • IHSDM • Analyzing unconventional designs

  16. Other Considerations • Begin the discussion now • Incorporate workshops into existing meetings • IDOT – Traffic and Safety Conference • Develop real-world scenarios & examples • Supply materials for the districts/regions • IDOT – 50 copies

  17. Implementation will not happen on its own.

  18. Information • www.highwaysafetymanual.org • Jon Nelson, P.E. • Missouri Department of Transportation • Senior Traffic Studies Specialist • 573-751-1157 • Jonathan.Nelson@modot.mo.gov

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