The Western Kuala Lumpur Traffic Dispersal Scheme (WTDS) project is an important road system, which provides the necessary dispersion of traffic in the western part of Kuala Lumpur. It consists of a new orbital route to complement the Middle Ring Road 1 and 2, a new radial link and also of the upgrading of an existing radial link (namely Jalan Damansara). The upgrading and improvement works on the existing Jalan Damansara dealt with light traffic throughout the construction period. Typically, the 8.5 km long Jalan Damansara generates about 165,000 vehicles a day. As such, careful planning and coordination was required in order to achieve minimum disturbance to the road user while maintaining the same level of service. One critical section on this road namely the Jalan Johar - Jalan Maarof junction and the Jalan Beringin - Jalan Semantan junction required a more complex traffic management planning than the rest because this two junction (with 3 or 4 phase signalization) will be upgraded into an interchange and they are less than 1 kilometer apart. The complexity arises as this road traverses an upper class elite residential areas and a major commercial area, the Damansara City Centre (DCC). The DCC when fully developed will be able to accommodate more than 7900 vehicles of parking space. However, currently the area is partially occupied by some office blocks and shop lots only. The initial proposal of constructing a multi-tier interchange at the Jalan Johar - Jalan Maarof junction will cause a nightmare to the road user and the adjacent residence. As an example certain routes/turning movements need to be closed for more than 6 months causing major disruptions to the traffic that may inconvenience the public, there is insufficient road space (constraint by residential properties) to provide adequate temporary lanes for traffic diversion, and the public may have to endure with a longer construction period. As a counter measures to mitigate this arising issue, an alternative proposal was made to convert the current two-way traffic flow surrounding the DCC i.e. along Jalan Johar - Jalan Beringin - Jalan Semantan and Jalan Damansara - Jalan Semantan into a one-way traffic system forming one big single roundabout. With this new one-way system, two flyovers at Jalan Johar - Jalan Maarof junction and one flyover at Jalan Beringin - Jalan Semantan junction would be built in place of the earlier proposed multi-tier interchange. This new traffic system would provide for a free-flow routing between the mainline traffic flow and the DCC traffic including its future development and at the same time segregating the local traffic movement. The realization of this new one-way traffic system involved 4 stages of traffic management during construction that will follow through until construction works completed which will be described in this paper. This new one-way traffic system provides more construction space that eases construction complexity with better managed traffic system that increases capacity of the road system by two fold once completed and will be able to cater.


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  • Accession Number: 00964421
  • Record Type: Publication
  • ISBN: 087659229X
  • Files: TRIS, ATRI
  • Created Date: Oct 22 2003 12:00AM