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Research Reports |
| Title: | Evaluating Local and Tribal Rural Road Design with the Interactive Highway Safety Design Model |
| Authors: | Xiao Qin, Zhi Chen, Chase Cutler, and Kimberly Vachal |
| Publication Date: | Sep 2013 |
| Report #: | DP-264 |
| TRID #: | 01495174 |
| Keywords: | highway design, highway safety, rural highways, traffic crashes, two lane highways, types of roads by jurisdiction |
| Type: | Research Report – Department Publications |
This document presents the application of the Highway Safety Manual (HSM) for rural local two-lane two-way highway segments in South Dakota. The calibration was based on three-year (2009-2011) crash data from 657 roadway segments constituting more than 750 miles of roadways. The calibration process includes establishing new base conditions, developing safety performance functions, converting crash modification factors to base conditions as well as substituting default values with state-specific values. Five models have been developed and compared based on statistical goodness-of-fit and calibration factors. The same procedures were also conducted for the tribal two-lane two-way highway segments in South Dakota based on three-year (2009-2011) crash data from 56 roadway segments constituting 199.5 miles of roadway. This documentation provides important guidance and empirical results regarding how to calibrate HSM models.
Qin, Xiao, Zhi Chen, Chase Cutler, and Kimberly Vachal. Evaluating Local and Tribal Rural Road Design with the Interactive Highway Safety Design Model, DP-264. North Dakota State University, Fargo: Upper Great Plains Transportation Institute, 2013.
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