HFST Before and After Safety Analysis

Bledsoe, Jay F; Lee, Hyung S

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HFST Before and After Safety Analysis

2021-03-01
By Bledsoe, Jay F ; Lee, Hyung S

File Language:

English

Details

Creators:

Bledsoe, Jay F ; Lee, Hyung S
Corporate Creators:

Applied Research Associates, Inc.
Corporate Contributors:

Missouri. Department of Transportation. Construction and Materials Division ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

Bayes' Theorem Before And After Studies Benefit Cost Analysis Countermeasures Crashes Crash Rates Empirical Bayes (EB) Fatalities High Friction Surface Treatment (HFST) Friction Friction Course Highway Safety Safety Performance Function (SPF) Skids Surface Course (Pavements)
Publication/ Report Number:

cmr 21-003
Resource Type:

Tech Report
Geographical Coverage:

Missouri;United States
Edition:

Final Report (November 2019-March2021)
Corporate Publisher:

Missouri. Department of Transportation. Construction and Materials Division
Abstract:

Due to its high potential for safety improvement, MoDOT deployed High Friction Surface Treatments (HFST) at several areas experiencing high crash rates since 2013. To determine if the HFSTs are providing the expected results and if MoDOT’s HFST program is effective, this study was conducted with the primary objective of evaluating MoDOT’s existing HFST sections with regard to their overall effectiveness (i.e., reduction in crashes) and benefit (i.e., return on investment). Statistical modeling of before/after crashes from MoDOT’s HFST sections showed that the HFST reduced crashes, with the reduction ranging from 13.7 percent to 79.5 percent and an overall reduction of 53.3 percent. The Benefit-Cost Analysis (BCA) carried out subsequently showed that MoDOT may expect a benefit-cost ratio (B/C) ranging from 2.3 to 409.1, with an overall average of 60.8. Based on these results, it is concluded that MoDOT’s HFST program is effective in reducing crashes with a high rate of return..
Format:

PDF
Funding:

MoDOT project # TR201909
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:6398bf6c65f9363fc4f3c462800523a146ed4019ddcf4a4b9060ed1d3e4ac9f465356416d609bc2635f6ba7e55f4c7f7ef603a3e19f39f969bcb37249596f73c
Download URL:

https://rosap.ntl.bts.gov/view/dot/56935/dot_56935_DS1.pdf
File Type:

[PDF - 5.81 MB ]

File Language:

English

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