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A Multi-Criteria Approach in Designing Bicycle Tracks
In addition, the scope of the analysis is set to be bounded within the campus and the 4 major roads of Ayer Rajah Expressway in the north, Clementi Road in the west, South Buona Vista Road in the east and Pasir Panjang Road in the south. Furthermore, it is assumed that the hostellers will be the main users of these cycling routes for commuting since they spend most amount of the time in campus. This extent of analysis, as defined by the scope, provides a reasonable framework of study, without compromising on the validity of the results produced as the most pertinent issues and factors are addressed. Extension of the scope is possible after critically analyzing the results of this pilot investigation.
3. Analysis Methodology This section discusses the modeling process involved in the study. The analysis procedure goes in line with the listed objectives where the preliminary groundwork of defining the origins-destinations, constraints and evaluation function pertinent to the project analysis is presented first. This is followed by a discussion on the procedures of preparing the initial data sources of the relevant raster layers that are capable of performing GIS analysis with respect to the constraints and evaluation function defined. The details of the major GIS analysis, some of the difficulties that were faced in performing these analysis and the methods in overcoming these difficulties will also be discussed. Finally, in view of the uncertainty of the GIS data and the changing nature of the campus landscape, the feasibility study that was conducted to verify the results from the GIS analysis through actual field studies is also discussed. In cases where the potential routes violate the feasibility constraints in reality, minor amendments on the routes derived to overcome these violations are proposed.  Figure 2. Overview of Analysis Methodology 3.1 Physical Modeling In the physical modeling process, the origin and destination zones are first identified based on the widely used desire line diagram. This is ensued by defining the pertinent constraints to be considered when planning and designing a cycling route. Based on a similar research done at the University of Queensland, Australia (4), three primary constraints pertinent to the project are identified: slope of the route, distance from the roads and distance from the major infrastructures. Finally, the criteria for the analysis have been narrowed down to safety, accessibility and the existing land use. |