Prioritisation of guard rail remediation works

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


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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
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

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