Research to Improve Safety

Ohio LTAP Center / Ohio Depart

#9134837

Wednesday, October 11, 2017
12:30 p.m. - 2 p.m. EDT

CM | 1.50

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Overview

         Ohio Rail Development Commission

         This presentation reports the results of an ODOT-funded research study to evaluate the adequacy and performance of

         the mathematical models used by ORDC for grade crossing hazard ranking. The goal of the study was to provide ODOT,

         the ORDC, the PUCO, and other stakeholders with a better understanding of the grade crossing hazard ranking formulas

         and other methods used by States to evaluate grade crossing hazards and select locations for hazard elimination projects.

         Safety Performance Based Lighting Installation Prioritization Method

         Historical crash data showed that the absence of lighting during nighttime resulted in a disproportionally large number of

         traffic crashes and fatalities. There is a lack of safety performance functions (SPFs) for freeways and interchanges with

         respect to lighting. Current national lighting guidelines were not based on quantified safety benefits of lighting. Therefore

         the objective of this paper is to develop crash prediction models for freeways and interchanges with regards to lighting

         based on Wisconsin data.  Analysis tools and procedure were then created based on the developed models to assist the

         prioritization of lighting installation. Five-year nighttime crashes on all freeways and interchanges in Wisconsin were

         collected. Nighttime crashes were identified and each assigned to a specific freeway segment or interchange ramp.

         Lighting pole data, as well as traffic and geometry data were also collected. SPFs were developed for freeway segments,

         interchange segments and ramps under both lighted and unlighted conditions using negative binomial generalized linear

         model. Injury severity distributions were also calculated for each segment type. Using the developed models, two

         analysis tools were created, namely proactive tool and reactive tool. Crash risk and lighting benefit were determined to

         be two important parameters in assessing the prioritization of lighting. Finally, lighting prioritization procedure was

         proposed. The proposed method showed to be more customizable and provide more flexibility in implementation based

         on specific conditions and circumstances.

         Effective detection and notification of wrong way driving on todays

         An NTSB study of Fatality Analysis and Reporting System (FARS) data shows that there were over 2,000 fatalities

         resulting from wrong way vehicle crashes between 2004 and 2009 (SIR1201.pdf). Early detection of wrong way drivers

         reduces the likelihood of a fatal crash by alerting the driver via messages posted to VMS signs along the roadway and

         alerting police, allowing them to intercept the driver. The key to safe resolution of these potentially fatal scenarios is the

         timing and method of communicating wrong way detections through the traffic management systems. We will discuss

         the challenges of false detection alarms and effective solutions to managing these scenarios to a safe conclusion.

Speakers

Thomas Burns

Invited Speaker

Project Development Manager, Ohio Rail Development Commission Read More

Zhixia Li

Invited Speaker

Assistant Professor in the Department of Civil and Environmental Engineering, University of Louisville Read More

Jim Cikanek

Invited Speaker

Director of Product Management at Image Sensing Systems Read More

Ben Sperry

Invited Speaker

Assistant Professor, Civil Engineering, Ohio University Read More

Contact Info

Jerry Garrison, Jerry.Garrison@dot.ohio.gov