N C H R P 17-54 Project PI: Malcolm H. Ray, P.E., PhD RoadSafe LLC 207-514-5474 Presented by Team Member: Karen K. Dixon, P.E., PhD.

Slides:

Advertisements

Similar presentations

Worked Example: Highway Safety Modeling. Outline –Safety Modeling »Safety Modeling Process –Set-up for Worked Example –Develop / Build Safety Model »Project.

Advertisements

FUTURE CMF RESEARCH AND CHALLENGES Traffic Records Forum October 27, 2014 Daniel Carter, UNC HSRC.

HSM: Celebrating 5 Years Together Brian Ray, PE Casey Bergh, PE.

HSM Practitioner’s Guider for Two-Lane Rural Highways Workshop Exercise IV – US 52 from Sageville to Holy Cross – Group Exercise - Session #8 8-1.

DISTRICT PILOT PROJECT PRESENTATION MAY 2, Highway Safety Manual Implementation.

Slide 1 ENCE688F and Highway Safety Manual Dr. Mohamadreza Banihashemi Senior Transportation Research Engineer II GENEX Systems University of Maryland.

HSM Applications to Two-Lane Rural Highways Predicting Crash Frequency and Applying CMF’s for Two-Lane Rural Highway Intersections - Session #6 6-1.

Spring  Crash modification factors (CMFs) are becoming increasing popular: ◦ Simple multiplication factor ◦ Used for estimating safety improvement.

Enhanced Safety Prediction Methodology and Analysis Tool for Freeways and Interchanges James A. Bonneson August 2012 NCHRP Project

Incorporating Safety into the Highway Design Process.

Incorporating Temporal Effect into Crash Safety Performance Functions Wen Cheng, Ph.D., P.E., PTOE Civil Engineering Department Cal Poly Pomona.

Session 10 Training Opportunities Brief Overview of Related Courses in USA / Canada Geni Bahar, P.E. NAVIGATS Inc.

Evaluating the Effectiveness of the Safety Investment Program (SIP) Policies for Oregon Literature Review Findings.

Role of SPFs in the Interactive Highway Safety Design Model (IHSDM) Mike Dimaiuta LENDIS Corporation.

The Empirical Bayes Method for Safety Estimation Doug Harwood MRIGlobal Kansas City, MO.

Network Screening 1 Module 3 Safety Analysis in a Data-limited, Local Agency Environment: July 22, Boise, Idaho.

FHWA Crash Modification Factors Clearinghouse Karen Scurry – FHWA Office of Safety Daniel Carter – UNC HSRC Shawn Troy – NCDOT CMF Clearinghouse Webinar,

Low-Cost Safety Improvements Pooled Fund Study FUTURE DIRECTION Annual TAC Meeting,2007 Roya Amjadi FHWA, Turner-Fairbank Research Center.

O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.

Evaluation of Alternative Methods for Identifying High Collision Concentration Locations Raghavan Srinivasan 1 Craig Lyon 2 Bhagwant Persaud 2 Carol Martell.

SPFs Applications by State DOTs John Milton Ph.D., P.E., Washington State Department of Transportation National Safety Performance Function Summit July.

HSM Use and Training Karen K. Dixon, Ph.D., P.E. Oregon State University.

Jason J. Siwula, PE – Safety Engineer DOES 24+0=22+2? AN INTRO TO HSM METHODS.

Role of SPFs in SafetyAnalyst Ray Krammes Federal Highway Administration.

HSM: Another Tool for Safety Management in Wyoming 1 Excellence in Transportation.

Quantitative Safety Information and Project Development Session 8 Policy Level Issues Related to Safety Timothy Neuman, PE Chief Highway Engineer CH2M.

The Highway Safety Manual: A New Tool for Safety Analysis John Zegeer, PE Kittelson & Associates, Inc. HSM Production Team Kittelson & Associates, Inc.

SPF Development and Data Needs John Milton Ph.D., P.E., Washington State Department of Transportation National Safety Performance Function Summit July.

Putting Together a Safety Program Kevin J. Haas, P.E.—Traffic Investigations Engineer Oregon Department of Transportation Traffic—Roadway Section (Salem,

Interactive Highway Safety Design Model (IHSDM) By Josh Hinds.

Use and Modification of Default SPFs in the IHSDM Mike Dimaiuta LENDIS Corporation.

Calibrating Highway Safety Manual Equations for Application in Florida Dr. Siva Srinivasan, Phillip Haas, Nagendra Dhakar, and Ryan Hormel (UF) Doug Harwood.

NCHRP Crash Reduction Factors for Traffic Engineering and ITS Improvements UNC HSRC VHB Ryerson University (Bhagwant and Craig)

Conference or Meeting Name 1 THE HIGHWAY SAFETY MANUAL Michael S. Griffith June 12, 2003.

ETM 607 – Putting It All Together Review for MidTerm II Apply Lessons Learned in a Team Lab - Input Modeling - Absolute Output Analysis - Relative Output.

Fall  Crashes are “independent” and “random” events (probabilistic events)  Estimate a relationship between crashes and covariates (or explanatory.

Highway Safety Analysis: Engineering Kenneth Epstein, P.E. Federal Highway Administration Office of Safety Programs Safety Data and Analysis Tools Workshop.

Highway Infrastructure and Operations Safety Research Needs (NCHRP 17-48) Prime Contractor: UNC Highway Safety Research Center Subcontractors: VHB Jim.

Impact of Intersection Angle on Safety HSIS Annual Liaison Meeting David Harkey, Bo Lan, Daniel Carter, Raghavan Srinivasan, Anusha Patel Nujjetty May.

1 Evaluation of Low-Cost Safety Improvements (ELCSI) Pooled Fund Study Roya Amjadi, Highway Research Engineer FHWA, Turner-Fairbank Research Center 10/24/08.

MAINE Highway Safety Information System Liaison Meeting Chapel Hill, North Carolina September , 2015 Darryl Belz, P.E. Maine Department of Transportation.

1 THE HIGHWAY SAFETY MANUAL Michael S. Griffith Federal Highway Administration July 26 th, 2004.

Session 2 History How did SPF come into being and why is it here to stay? Geni Bahar, P.E. NAVIGATS Inc.

Role of Safety Performance Functions in the Highway Safety Manual July 29, 2009.

Scale and Scope of Highway Safety Manual Implementation in the Project Development Process For the Federal Highway Administration (FHWA) By Science Applications.

Evaluating the performance of three different network screening methods for detecting high collision concentration locations using empirical data Prepared.

FHWA: Revision of Thirteen Controlling Criteria for Design; Notice for Request and Comment. Comments Due: December 7, 2015 Jeremy Fletcher, P.E., P.S.M.

HSM Applications to Suburban/Urban Multilane Intersections Prediction of Crash Frequency for Suburban/Urban Multilane Intersections - Session #9.

The Professional Engineer Stamp. PE Stamp Required: Optional Details Optional Procedures Optional Materials Structural Capacity Safety Results of.

1 The Highway Safety Manual Predictive Methods. 2 New Highway Safety Manual of 2010 ►Methodology is like that for assessing and assuring the adequacy.

Impact of Intersection Angle on Safety

HSM Applications to Multilane Rural Highways and Urban Suburban Streets Predicting Crash Frequency and CMFs for Rural Divided Multilane Highways - Session.

HSM Applications to Multilane Rural Highways and Urban Suburban Streets Safety and Operational Effects of Geometric Design Features for Two-Lane Rural.

Highway Safety Manual The purpose of the HSM is to provide the best factual information and tools, in a useful and widely accepted form to facilitate roadway.

Using CMF’s in Benefit/Cost Analysis and Project Prioritization

Tailor made legislation for regions and cities?

FC 335 Safe and Supportive Schools Competitive Grant Webinar

HSM Practioner's Guide for Two-Lane Rural Highways Workshop

HSM Practitioner’s Guider for Two-Lane Rural Highways Workshop

HSM Practioner's Guide for Two-Lane Rural Highways Workshop

Worked Example: Highway Safety Modeling

HSM Applications to Multilane Urban Suburban Multilane Intersections

HSM Applications to Multilane Urban Suburban Multilane Intersections

HSM Practioner's Guide for Two-Lane Rural Highways Workshop

HSM Practioner's Guide for Two-Lane Rural Highways Workshop

HSM Practitioner’s Guider for Two-Lane Rural Highways Workshop

HSM Practitioner’s Guider for Two-Lane Rural Highways Workshop

HSM Practitioner’s Guider for Two-Lane Rural Highways Workshop

NCHRP Project Update: A Calibrated and Validated National Performance-Related Specification for Emulsified Asphalt Binder Greg Harder AASHTO TSP•2.

Presentation transcript:

N C H R P Project PI: Malcolm H. Ray, P.E., PhD RoadSafe LLC Presented by Team Member: Karen K. Dixon, P.E., PhD s: OR

 Develop quantitative measures that can be incorporated into the HSM to evaluate the effects of roadside designs and features on the frequency and severity of lane departure crashes.

 Literature review  Compared RSAPv3 and the HSM ◦ Encroachment method ◦ Crash-based method ◦ Recommendations for use of both methods  Analyzed sample scenarios ◦ Very different results  Different base conditions  Different units (i.e., single vehicle crashes vs. ROR crashes)  Identified potential data sources and existing CMFs  Interim Report submitted June 6, 2012.

 Interim Report meeting: May 2012  Modifications to RSAPv3: June 2012  Quantitative Measures for HSM: Early 2013  Final Report: Summer 2013

Default distribution incudes SVROR crashes (52%) and Overturned (2.5%). No separate SPF for SVRORs (Calculated as a proportion of the total). SVROR is a major crash type but SVROR is only a part of ROR. HSM SPF functional form increases with ADT (generally linear shape). Roadside Hazard Rating is the main measure of roadside condition.

Default distribution includes SV crashes (77%). SV are a major crash type for this highway type but ROR crashes are not exactly the same as SV crashes. No separate SPF for SV crashes (Calculated as a proportion of the total). HSM SPF functional form increases with ADT (generally linear shape).

A separate SPF for SV crashes by road type. SV overlaps with ROR but is not the same. Different coefficients for the SPF based on road type. Separate SPFs for vehicle-pedestrian and vehicle-bicyclist. Non-linear relationship between ADT and crash frequency.

Research just completed Not part of the NCHRP Contract

 The current SPFs for each road types handle ROR crashes differently. All lump ROR crashes in with something else (i.e., SV or SVROR)  Per Panel Instructions, Project will develop new ROR SPFs and CMFs for each road type  Phase II – Rural 2-lane and multilane (current effort)  Phase III – Urban and Suburban

 RSAPv3 will continue to be the go-to tool for the analysis of detailed roadside design scenarios and the development of roadside policy.  The new HSM ROR Predictive method and companion CMFs will be the go-to tool for preliminary design and scoping of roadside issues.

How should we integrate these new SPFs into an updated HSM? - A new section in each chapter for ROR? - A new chapter on ROR? - How do we handle inconsistencies between the new ROR SPFs and the existing ones? What about double counting?