An integrated urban systems model with GIS

The purpose of the research is to develop an integrated urban systems model, which will assist in formulating a better land use-transportation policy by simulating the relationships between land use patterns and travel behavior, integrated with geographic information systems (GISs). In order to make an integrated land use-transportation model possible with the assistance of GISs technologies, the following four sub-systems have been developed: (1) an effective traffic analysis zone generation system; (2) an iterative land use and transportation modeling system; (3) efficient interfaces between GIS and land use, and GIS and transportation models; and (4) a user-friendly graphic user interface (GUI) system. By integrating these sub-systems, a variety of alternative land use-transportation policies can be evaluated through the modification of input parameters in each simulation. Eventually, the developed model using a GIS will assist in formulating an effective land use policy by obtaining robust simulation results for both land use-transportation planners and decision makers. The model has been applied to the Urbana-Champaign area as well as to the Seoul region in Korea for a demonstration of the workings of the model.

LUTI modelling in the Netherlands

This paper presents the use of the Dutch LUTI model TIGRIS in the planning process. TIGRIS is a long-term, incremental, time-based interaction and allocation model for land use, mobility, congestion and accessibility. In TIGRIS accessibility is described as a location factor for land-use that generates mobility. This increased mobility leads to congestion and changes in accessibility, and afterwards to new changes in land use. The model is used for regional and national forecasting, and follows a learning-by-doing approach. In this paper four applications of TIGRIS are described with a focus on assessing impacts and the role in the planning process. Because TIGRIS was originally developed as a sketch planning model with limited detail and the calibration on the basis of empirical data was rather limited, a new version, TIGRIS XL, is currently being developed