Updated and Regional Calibration Factors for Highway Safety Manual Crash Prediction Models

Smith, Sarah; Carter, Daniel; Srinivasan, Raghavan; University of North Carolina at Chapel Hill. Highway Safety Research Center

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Updated and Regional Calibration Factors for Highway Safety Manual Crash Prediction Models

2017-02-17
By Smith, Sarah ; Carter, Daniel ; Srinivasan, Raghavan

[PDF-1.87 MB]

English

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Creators:

Smith, Sarah ; Carter, Daniel ; Srinivasan, Raghavan

Smith, Sarah ; Carter, Daniel ; Srinivasan, Raghavan Less -
Corporate Creators:

University of North Carolina at Chapel Hill. Highway Safety Research Center
Corporate Contributors:

North Carolina Department of Transportation. Research and Development Unit ; United States. Department of Transportation. Federal Highway Administration

North Carolina Department of Transportation. Research and Development Unit ; United States. Department of Transportation. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Before-after Calibration Calibration Factor Calibration Function Crash Risk Forecasting Empirical Bayes Empirical Methods Freeways Highway Safety Highway Safety Manual Negative Binomial Regression Network Screening Regression Analysis Safety Analysis Safety Performance Function
Publication/ Report Number:

FHWA/NC/2016-09
Resource Type:

Tech Report
Geographical Coverage:

United States ; North Carolina

United States ; North Carolina Less -
Edition:

Final report, August 1, 2015 to October 31, 2016
Corporate Publisher:

North Carolina. Dept. of Transportation
Abstract:

The overall objective was to estimate the calibration factors for all the prediction models in Part C of the 1st edition of the HSM that are of interest to NCDOT as well as calibration factors for freeway models that are slated to be part of the next HSM based on the latest six years of roadway, traffic, and crash data from North Carolina. For some of the models, separate calibration factors were developed for the three different regions in North Carolina (Coast, Mountain, and Piedmont). The project also produced state-specific crash type proportions to be used along with the calibration factors. For rural two lane roads, calibration functions were also estimated. Roadway and crash data from 2010 to 2015 were used in this effort.
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:cbd993d36dd046e1eecd05b93507038523de4dee0dd78b09ebade02c1e206b8e
Download URL:

https://rosap.ntl.bts.gov/view/dot/54421/dot_54421_DS1.pdf
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Updated and Regional Calibration Factors for Highway Safety Manual Crash Prediction Models

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