Crash Location Correction for Freeway Interchange Modeling: Final Report

Sun, Carlos; Edara, Praveen K.; Brown, Henry; Nemmers, Charles J.; Claros, Boris R.; Khezerzadeh, Amir; Zhang, Mengyuan; Nam, Kyoungmin; Berry, Jacob; University of Missouri--Columbia. Dept. of Civil and Environmental Engineering

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Crash Location Correction for Freeway Interchange Modeling: Final Report

2016-06-01
By Sun, Carlos ; Edara, Praveen K. ; Brown, Henry ; ...

[PDF-2.77 MB]

English

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Details:

Creators:

Sun, Carlos ; Edara, Praveen K. ; Brown, Henry ; Nemmers, Charles J. ; Claros, Boris R. ; ... More +

Sun, Carlos ; Edara, Praveen K. ; Brown, Henry ; Nemmers, Charles J. ; Claros, Boris R. ; Khezerzadeh, Amir ; Zhang, Mengyuan ; Nam, Kyoungmin ; Berry, Jacob Less -
Corporate Creators:

University of Missouri--Columbia. Dept. of Civil and Environmental Engineering
Corporate Contributors:

Missouri. Dept. of Transportation. Construction and Materials Division ; Midwest Transportation Center ; United States. Dept. of Transportation. Office of the Assistant Secretary for Research and Technology ; United States. Federal Highway Administration ; Iowa. Dept. of Transportation

Missouri. Dept. of Transportation. Construction and Materials Division ; Midwest Transportation Center ; United States. Dept. of Transportation. Office of the Assistant Secretary for Research and Technology ; United States. Federal Highway Administration ; Iowa. Dept. of Transportation Less -
Subject/TRT Terms:

[+]

Accident Data Accident Locations Crash Data Data Collection Data Processing Freeways High Risk Locations Highway Safety Highway Safety Manual Interchanges Intersections Model Calibration Ramps (Interchanges) Research Hub Roadside Inventory Data Collection Traffic Crashes
Publication/ Report Number:

cmr 16-010
Resource Type:

Tech Report
Geographical Coverage:

United States ; Missouri

United States ; Missouri Less -
TRIS Online Accession Number:

01603661
Edition:

Final report
Corporate Publisher:

Missouri. Dept. of Transportation
Abstract:

The American Association of State Highway and Transportation Officials (AASHTO) released a supplement to the Highway Safety Manual (HSM) in 2014 that includes models for freeway interchanges composed of segments, speed-change lanes and terminals. A necessary component to the use of HSM is having the appropriate safety-related data. However, a high percentage, approximately 75 percent, of interchange crashes on the Missouri Department of Transportation (MoDOT) Transportation Management System (TMS) systems are landed on an incorrect location within an interchange. For example, crashes are frequently placed in the midpoint of the ramp terminal instead of properly assigned to one of the two ramp terminals. Another example is crashes that are assigned to the freeway mainline when the crashes are related to ramps. In order to properly calibrate and use HSM freeway interchange models, the location of crashes needs to be corrected. The crash landing correction involves the visual inspection of crash images compiled by the Missouri State Highway Patrol. A detailed procedure was established along with a reviewer test so that crash correction can be conducted uniformly among multiple reviewers. A total of 10,897 crashes were reviewed, and 9,168 underwent detailed review and correction. Of the total, 1482 were partial cloverleaf crashes, 5086 were diamond interchange crashes, 780 were ramp crashes, and 1820 were speed-change lane crashes. The crash location correction process helped to eliminate the error rate of 69% associated with interchange crash locations. Any analyst can correct crash locations by following the procedure detailed in this report.
Format:

PDF
Funding:

MoDOT project# TR201504 ; DTRT13-G-UTC37

MoDOT project# TR201504 ; DTRT13-G-UTC37 Less -
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:d68b41a066272bb29868fe4f2a017e1e7dd92427e085c657cb68a1fd03d9825f
Download URL:

https://rosap.ntl.bts.gov/view/dot/31042/dot_31042_DS1.pdf
File Type:

No Additional Files

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Crash Location Correction for Freeway Interchange Modeling: Final Report

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