Abstract
Abstract. Network-based visualisation provides a detailed and accurate way of estimating accessibilities in cities. In this paper, the city of Augsburg serves as an example for modelling changes in network-based accessibility inside the inner city. For improving the urban public transport network, the central transportation hub “Königsplatz” recently underwent a major reconstruction. Therefore, a central detour of tram services was established. The change of accessibility is investigated using OpenStreetMap as database. The analysis was performed by a comparison of the spatiotemporal accessibility with bus and tram, in the period during and after the reconstruction. Geovisualisation of this accessibility analysis is accomplished via colour-coded accessibility maps and 3D-areal maps. A major change of accessibility can be detected between the reconstruction and post-reconstruction phase. Furthermore, this accessibility analysis reveals a far worse accessibility of public transportation in the eastern part compared to the western part of the city centre in Augsburg.
Highlights
Accessibility is one of the most important features for urban transport systems and is widely seen as a key criterion for location decisions (Benenson et al 2011)
The road network of Augsburg has been extracted from the OpenStreetMap (OSM) project and subsequently used as database for realising the accessibility analysis of the inner city
The accessibility analysis provides a clear overview on the accessibility of Public Transport Network (PTN) in Augsburg’s city centre
Summary
Accessibility is one of the most important features for urban transport systems and is widely seen as a key criterion for location decisions (Benenson et al 2011). Accessibility proves to be an objective measure to determinate the quality of a transportation network. Considering the residents' point of view, the appeal of Public Transport Network (PTN) mainly is determined by its quality of coverage and connections. The reconstruction of an important public transport hub in Augsburg in 2013 leads to several deviations in the PTN, which majorly influence the accessibility of the inner city. For drawing a comparison between the phases during and after the reconstruction measures, an accessibility analysis using a new approach based on timetable and route data is performed within this paper. A network-based approach is applied and visualised using a three-dimensional method.
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