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Land Use and Travel Behaviour: Expected Effects from the Perspective of Utility Theory and Activity-Based Theories

Assumptions about the effects of various land-use characteristics on travel patterns have found their way into diverse concepts of planning and design, such as the compact city and neighbourhood-design principles. In general, these concepts aim at reducing travel distances and reducing car-travel speed, as it is assumed that as travel distances are shorter, individuals will travel less, and the relative competitive position of slower modes is increased. Although some literature supports the link between land use and travel behaviour, for the greater part limited effects have been concluded, whereas in others it has been concluded that there is virtually no effect. We argue that the effects fall short of the expectations advocated by the land-use concepts, because of shortcomings behind assumptions concerning the relationships between land use and travel behaviour. We argue that utility-based and activity-based theories add some extra insights. Various behavioural responses in terms of travel-time changes are possible, depending on whether travel time is minimised, benefits maximised, or activity patterns optimised. It is concluded that the contribution of compact urban designs to reduction on travel may not be as straightforward as is suggested by their advocates. In any case, a simplified distance-oriented and trip-oriented approach is unable to examine complex behaviour, and a broader framework of space and time is needed.