HIGHWAY SAFETY MANUAL WORKSHOP

Transcription

1 Instructor HIGHWY SFETY MNUL WORKSHOP ale Reed Lighthizer, Ph..,P.E. Senior Research Engineer enter for Technology and Training Michigan Tech 1-2 Housekeeping Phones reaks / meals icipation Housekeeping cknowledgements This course is based on materials developed as part of NHRP project Highway Safety Manual Implementation and Training Materials ase studies and example problem concepts are based on materials developed by r. Karen ixon, Oregon State University and r. Ida Van Schalkwyk, h2mhill, Jon Nelson, and Larry Sutherland Module 1 1

2 Road safety management is in transition. The transition is from action based on experience, intuition, judgment, and tradition, to action based on empirical evidence, science, and technology HSM Vol. 1 ( ): hapter 1 MOULE 1. INTROUTION 1-6 Learning Outcomes HSM: Purpose udience Structure enefits ctivities Projects Integration 1-7 How Important is Safety? Programming and prioritization System planning Program administration Policy development Project development Operations and maintenance Public affairs Interagency coordination 1-8* Module 1 2

3 Safety Trade-Offs? Need Integrate Safety into ecision Processes Safety Environment osts Right-of-Way 1-9 What o You o? 1-10* Forces Influencing pplication of Quantitative Safety Information riving Forces Restraining Forces What Quantify Effect of ecisions ccountability/ Performance Measurement 1-11* 1-12 Module 1 3

4 1 2 3 HSM Vision kin to HM efinitive; represents quantitative state of theart information Widely accepted within professional practice of transportation engineering Science based; updated regularly to reflect research Why Limited Resources, Science, and Technology Legislatively Mandated Priorities Where State ounty Region Local Integrate safety into the decision-making processes Who Transportation Traffic Engineering Safety Office esign Office apital Programs Module 1 4

5 When 1.System Management 2.Project evelopment Process System and Programming ssess system needs Identify projects/studies ssess network infrastructure priorities System Project esign & onstruction Operations & Maintenance Systemwide Safety Improvement Programs Project evelopment - efine scope / problem(s) / constraints Identify solutions Evaluate expected quantitative safety effects Select preferred alternative System Project esign & onstruction Operations & Maintenance Module 1 5

6 Project evelopment esign and onstruction Evaluate safety of alternative designs Review / document design exceptions, variances, and waivers Inform construction decisions System Project esign & onstruction Operations & Maintenance >> 0 >> 1 >> 2 >> 3 >> 1-21* 4 >> 1-22* esign Highway Safety has Two imensions Existing onditions lternative 1 Nominal Safety Substantive Safety lternative 2 lternative >> 0 >> 1 >> 2 >> 3 >> 4 >> Standards ompliance Expected or ctual rash Frequency and Severity 1-24* Module 1 6

7 More Quantitative ommon Impacts for Project Level ecisions? Traffic Noise Traffic esign Models Operations / riteria ir Quality Models Microscopic (nominal 3- Visualization Simulation safety) Environmental onstruction ssessments Plans The HSM ost Models Real Estate ppraisals OT atabases Substantive Safety Safety Environmental Traffic Right-of-Way osts Impacts Impacts Operations Greater Weight Operations and Maintenance Monitor operations balance - safety, mobility, and access Evaluate improvement effectiveness System Project esign & onstruction Operations & Maintenance The HSM and Other ocuments Versus Legal ontext Protected Under Federal Law 23 US Module 1 7

8 The HSM oes NOT Establish a legal standard of care reate a public duty Set requirements or mandates Establish design/operation best practices ontain warrants or standards Supersede other publications Professional Support Joint Subcommittee Task Force Thousands of volunteer hours NHRP, SHTO, FHW resources TR Task Force * vs rash Prediction and 31 Reduction dvance Safety Knowledge escriptive Predictive Module 1 8

9 HSM ontent and Structure Vol. 1 ( ) Introduction Human Factors Fundamentals Vol. 1 ( ) Roadway Safety Management Process Vol. 3 ( ) rash Modification Factors (MFs) Vol. 2 ( ) Predictive Method Introduction and Overview (h. 1) Road Safety Management Process Human Factors (h. 2) Fundamentals (h. 3) Network Screening (h. 4) iagnosis and ountermeasure Selection (h. 5 & 6) Economic ppraisal and Prioritization (h. 7 & 8) Safety Effectiveness Evaluation (h. 9) Module 1 9

10 Predictive Methods Methodology Safety Performance Functions rash Modification Factors alibration pplications Example problems References Facilities Rural Two-lane Roads (h. 10) Rural Multi-lane Roads (h. 11) Urban Suburban rterials (h. 12) Predictive Methods ommon Procedures ppendix: alibrating predictive methods Empirical ayes -combining predicted with observed crashes rash Modification Factors Roadway segments (h. 13) Intersections (h. 14) Interchanges (h. 15) Special facilities and geometric situations (h. 16) Module 1 10

11 ompanion Software HSM : Roadway Safety Management Process : Predictive Methods : rash Modification Factors Safetynalyst Supporting Tool IHSM FHW RF/MF learinghouse Resources and ontacts HSM Website SHTO Kelly Hardy: khardy@aashto.org SHTO JOINT TSK OMMITTEE FOR THE HSM on Vaughn, LOT, vaughnd@dot.state.al.us Priscilla Tobias, IOT, Priscilla.Tobias@illinois.gov FHW Mike Griffith, mike.griffith@dot.gov Ray Krammes, Ray.Krammes@dot.gov TR Highway Safety Performance ommittee John Milton, WSOT, miltonj@wsdot.wa.gov Summary MOULE 1. INTROUTION 1-43 Module 1 11