01030704

Component

https://doi.org/10.3141/1950-06

http://scholar.google.com...vell&publication_year=2006

The TRB "Highway Safety Manual" Task Force is providing direction and oversight in the preparation of a new document to be called the "Highway Safety Manual" (HSM). The complete version of the HSM is expected to be released to the public in 2007. A draft prototype chapter (DPC) for rural two-lane highways is available for review. A Texas Department of Transportation project explored the use of the DPC by applying the methodology to two case studies and exploring methods to develop calibration factors. The lessons learned from the effort can be used to improve the DPC along with other chapters in development. Additional guidance is needed on (a) how to identify segments, (b) acceptable minimum segment lengths, (c) how best to combine the predictions for intersections with those for tangents and curves, (d) the key variables within the procedures and appropriate assumptions when data for those variables are not available, (e) the confidence in the approach for individual roadway segments as opposed to a roadway, (f) the potential of using confidence intervals in the prediction process, and (g) how best to use the predictions generated from the methodology.

01030706

English

pp 44-54

2006

Transportation Research Record: Journal of the Transportation Research Board

0309099595

Print

Figures (6) ; References (7) ; Tables (2)

Calibration; Case studies; Crash risk forecasting; Lessons learned; Rural highways; Two lane highways

Highway Safety Manual

Highways; Safety and Human Factors; I80: Accident Studies

TRIS, TRB

Mar 3 2006 10:35AM

• Application of "Highway Safety Manual" Draft Chapter: Louisiana Experience
• Bayesian Multivariate Poisson Regression for Models of Injury Count, by Severity
• Calibration of Safety Prediction Models for Planning Transportation Networks
• Comparison of Two Negative Binomial Regression Techniques in Developing Accident Prediction Models
• Describing the Evolution in the Number of Highway Deaths by Decomposition in Exposure, Accident Risk, and Fatality Risk
• Effects of Sample Size on Goodness-of-Fit Statistic and Confidence Intervals of Crash Prediction Models Subjected to Low Sample Mean Values
• Refinement of Accident Prediction Models for Spanish National Network
• Use of Propensity Score Matching Method and Hybrid Bayesian Method to Estimate Crash Modification Factors of Signal Installation
• Using Macrolevel Collision Prediction Models in Road Safety Planning Applications