Traffic models demand large amounts of data - some of which are: Traffic network topology, traffic network data, zone-data and trip matrices. GIS is a natural tool for handling most of these data as it can ease the work process and improve the quality control. However, traffic models demand a com-plex topology not very well covered by the traditional GIS-topology. The paper describes a number of applications where ARC/INFO and ArcView have been used to automate the process of building a traffic network topology. The methodology has been used on a number of full-scale models, from medium sized urban areas to metropolitan areas (Copenhagen, Denmark and Bandung, Indonesia). The paper covers key subjects in the work process which has been eased considerably by using AML and Avenue scripts or by using the information from ARC/INFO in external applications:· Semi-automatic procedures for attaching zones and zone-centroids to the traffic network. · Methods to handle intersection-data, including automatic generation of node data and turn-data from link-attributes.· (Geographical) Coordination of road networks and public transport networks.· Methods for handling many project alternatives in a consistent way at network level.Some of these tasks would have demanded an overwhelming work effort to carry through with tra-ditional non-GIS based approaches. In addition, the paper discusses how the GIS can interact with the traffic model algorithms (typically external applications). Finally, needs for further integration between the traffic network representation in GIS and traffic models are discussed, and examples of work-arounds are given.
|Title of host publication||GIS-based methods for establishing the datafoundation for traffic models|
|Publication status||Published - 1997|
|Event||17th Annual ESRI USer Conference - San Diego, USA|
Duration: 1 Jan 1997 → …
|Conference||17th Annual ESRI USer Conference|
|City||San Diego, USA|
|Period||01/01/1997 → …|