A GIS-method to calculate accessibility by car, bus, cycle and foot

摘要

Financed by the Swedish National Road Administration (Vagverket) I have developed GIS-methods (Geographic Information System) to analyse different users' accessibility to different facilities in real footway, cycleway, public transport and car networks. The focus is on the standard setting user groups (children, elderly and the disabled) in Swedish traffic policy as well as on women and their assumed demands concerning safety, security and comfort in foot- and cycleway networks. The travel time between origins and destinations of free choice, chosen among the real estate coordinates in a town, can then be calculated. Using these models it is possible to calculate travel time quotients between the four modes of travel with origin and destination of free choice among the real estate coordinates. Several ArcView GIS applications have been developed in the projects to make accessibility analyses possible and facilitated. The method is shown to be a most useful tool to perform accessibility analyses in detail, to form the basis of decision-making on measures in the traffic environment, and at the same time it highlights the need for operational knowledge about the relations between street design and the users' safety and security.