Research Papers

Safety Performance of High Tension Cable Barrier in Alberta

Filename 55.pdf
Filesize 324 KB
Version 1
Date added May 26, 2013
Downloaded 11 times/fois
Category 2013 CMRSC XXIII Montréal
Tags Session 1A
Author/Auteur Tony Churchill, Masood Hassan, Crystal Morison

Abstract

In 2010, construction of 133 km of HTCB in the median of Alberta Highway 2 (123 km of highway with some segments where HTCB is installed on both sides of the median) was completed from North of Airdrie to Red Deer and near Leduc. The design of this length of barrier was complex due to the variety of median conditions when considering variables such as median width, sideslopes, and existing hardware in the median. Following the HTCB construction, a comprehensive evaluation program has been undertaken. Confirmation of the safety performance using available collision data to date is undertaken to evaluate the influence of the various median configurations on safety performance. The methodology includes an Empirical Bayes before and after analysis, as described in the AASHTO Highway Safety Manual but using un-calibrated SPFs, and an evaluation of the benefit cost performance of the barrier.

Tony Churchill, Masood Hassan, Crystal Morison