Abstract

This paper is to demonstrate the integration of spatial modeling and geographic information systems (GIS) can be used in the optimal site location for natural gas vehicles (NGV) station in Bangkok. Integration has been proposed as one of the characteristics which distinguish GIS from other information systems. Variables used as input in this process mainly address direct construction costs and station efficiency once the structure has been completed. Some of the variables examined include: proximity to population centers, distance from neighboring stations, the easements of using existing utility, car density and speed, land price, and the number of NGV registered car in Bangkok. Increasing levels of interest in the coupled systems, which are often referred to as spatial decision support systems (SDSS) has wide range of application areas. To do spatial analysis using ArcView GIS 3.2 as a tool. The results from this study can be concluded that six locations around Nongjok district were evaluated as the optimal sites for the NGV station in Bangkok.

Key words: NGV station, Bangkok, geographic information systems (GIS), spatial analysis, integration, spatial decision support systems (SDSS).