Prioritisation of guard rail remediation works

Anderson, Troy Dennis (2005) Prioritisation of guard rail remediation works. [USQ Project]

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Abstract

Road Safety Barrier Systems standards have changed over time.
Consequently most road authorities have a variety of barrier systems
within their jurisdiction and difficulties may be experienced in determining
which sub-standard barriers create the greatest risk. This project,
conducted in association with the Southern District of the Department of
Main Roads, Queensland, sought to determine a method for prioritising
remedial works on sub-standard barriers.
The project is focused upon the local authority areas of Esk, Gatton and
Laidley. A review of design standards and strategies employed and
proposed by other state and overseas road authorities was performed.
Further work developed a prioritisation method by which remedial works
can be programmed upon federal, state and local government controlled
roads.
The developed prioritisation method uses an assessment tool to evaluate
individual guardrail sections against 3 specified criteria: traffic volume,
traffic composition and guardrail standard. It is imperative to bear in mind
that the developed procedure is a tool and that results must be executed
in conjunction with good engineering judgement.
Key findings of the project were:
- It is advantageous to have crash barrier data held by the road
authority in a single, regularly updated database;
- Significant variations in traffic volume and/or composition along a
length of road need to be discerned if an accurate assessment of
variations in risk are to be calculated;
- The study has found a high priority should be given to locations where
guard rail is no longer required or a roadside hazard can be removed
or reduced; and
- The financial implications of retrofitting all non compliant guardrail in
the Southern District of the Department of Main Roads are significant.


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Item Type: USQ Project
Refereed: No
Item Status: Live Archive
Faculty/School / Institute/Centre: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering (Up to 30 Jun 2013)
Date Deposited: 11 Oct 2007 00:19
Last Modified: 02 Jul 2013 22:31
Uncontrolled Keywords: guardrail, road safety, barrier systems, end treatment, crash barrier
Fields of Research (2008): 09 Engineering > 0905 Civil Engineering > 090507 Transport Engineering
Fields of Research (2020): 40 ENGINEERING > 4005 Civil engineering > 400512 Transport engineering
URI: https://sear.unisq.edu.au/id/eprint/362

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