Mapping Overlapping Commuting-to-Work Areas

Please click here to download the map associated with this article. This article focuses on mapping and delineating commuting areas of work travel (commuting-to-work area—CTWA). Traditional procedures for delimiting these areas assign each municipality to a single catchment area. Commuting distances and the complexity of commuter flows have increased steadily over the years. A classical method in transport planning is a mapping of flows where origin and destination are connected with a straight line resulting in a visualisation of the overlaps. However, the proposed new commuting-to-work area delineation describes a 2-dimensional catchment area of each urban core naturally overlapping with other catchments. Four different degrees of generalisation of CTWAs, from a morphological to a circular area, are discussed and compared to alternative mappings.