March 2010 Vol. 16 No. (1 & 2)

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Journal March 2010.pdf
This (double) issue of the REAAA Journal (Volume 16, Nos 1 and 2) contains six papers.

Construction of Sungai Prai Bridge, Butterworth, Penang, by Ir Dr Ismail Bin Mohamed Taib, Public Works Department, Malaysia and Ir Tan Yang Peng, Perunding Jurutera DAH Sdn Bhd, Malaysia

The Sungai Prai Bridge was the most complex and challenging part of the 12.1 km long Butterworth Outer Ring Road project. The bridge links the port of Butterworth to the primary arterial North-South Highway and to the Penang Bridge. It fulfils a role taking heavy traffic, particularly port traffic away from the congested mixed use and residential areas of Butterworth and Prai. This paper describes the project, the alternative designs considered and the implementation of the project.

Impact of Motorcycle Travel Behaviour on Saturation Flow Rates at Signalised Intersections in Malaysia

by LV Leong, Universiti Sains Malaysia, WH Wan Ibrahim, Universiti Malaysia Sarawak and AF Mohd. Sadullah, Malaysian Institute of Road Safety Research (MIROS)
In Malaysia, almost half of the registered vehicles are motorcycles and motorcycle ownership has increased significantly, from 0.17 motorcycles per person in 1990 to 0.29 in 2007. The improper treatment of motorcycles when signalised intersections are designed results in additional traffic congestion and may increase the number of motorcycle accidents. In this study, the behaviour of motorcyclists at signalised intersections in Malaysia, and their influence on estimates of saturation flow rates, was examined and a model that includes their behaviour when estimating saturation flow rates developed.

Environment and Road Safety in Malaysia

by Jamilah Mohd Marjan, Malaysian Institute of Road Safety Research (MIROS)
There are approximately 6,000 fatalities in Malaysia annually, or 3.7 deaths per 10,000 registered vehicles. The Government of Malaysia has set a target of 2 deaths per 10,000 registered vehicles by 2010. Malaysia uses the integrated planning matrix where the emphasis in safety initiatives is focused on human, vehicle and environment factors, at both the pre-crash, crash and post-crash stages. The road environment initiatives are described in this paper.

Road Fund: A Tool For Asset Preservation In Bangladesh

by Misbah Uddin Khan, Chobe District Council, Botswana and Shamima Nargis, Farhana Husna, Sheikh Sohel Ahmed and Mohammad Bulbul Hossain, Roads and Highways Department (RHD), Bangladesh
The Roads and Highways Department (RHD) of Bangladesh has a sound pavement management system (PMS), which consists of data collection, a road database and use of the Highway Development and Management (HDM-4) model for asset preservation. However, RHD’s backlog is increasing regularly due to its assets not being maintained on time owing to a lack of sufficient funding. In this paper, relevant Government policies in the transport sector and the new Road Master Plan, directed especially on maintenance, are reviewed. It is concluded that increased road funding would be the long-term solution for road network management in Bangladesh.

The Development of an Accident Black Spot Program in Singapore

by Hau Lay Peng and Ho Seng Tim, Land Transport Authority, Singapore
A black spot program (BSP) is a road safety engineering strategy that uses pre-defined criteria and targets to identify and treat accident-prone locations. Singapore’s BSP was commissioned in 2005, after years of preparatory work. Most developed countries have defined their own black spot criteria and developed their own strategies based on their individual traffic and accident histories. This is a vital step if a cost-effective reduction in highway accidents is to be achieved. The purpose of this paper is to discuss the Singapore BSP and to present some initial findings.

Development of a Decay Curve for Pavement Marking Retroreflectivity

by Hyun-Suk Lee and Heung-Un Oh, Korea Expressway Corporation
The performance of retroreflectivity varies according to traffic volume age, the type of pavement marking material and its colour. Data collected on freeways throughout Korea was used to develop regression equations relating traffic volume and service life as independent variables and retroreflectivity as the dependent variables. This paper presents the results of the study, including a literature review of previous work in this area. It is recommended that aspects of pavement marking performance other than retroreflectivity, such as wear and adhesion to the pavement surface, also be considered when determining if a linemaking should be replaced. The Editorial Panel continues to seek papers and technical notes for publication in the Journal. The membership of the Editorial Panel follows. The Panel is striving to publish at least one paper from each Chapter or region each year. Authors wishing to submit papers should contact: [email protected] or [email protected].

Readers who would like to nominate for membership of the Editorial Panel should contact their appropriate Chapter.

Kieran Sharp

Chairman REAAA Technical Committee

for full journal please download Pdf icon2.png here