Integrated transport planning: What is too far and what is too close? Yusak O. Susilo 1 Centre for Transport and Society School of the Built and Natural Environment University of the West of England Frenchay Campus, Bristol, BS16 1QY United Kingdom Email: yusak.susilo@uwe.ac.uk Martin Dijst Department of Human Geography & Planning Faculty of Geosciences Utrecht University PO Box 80.115, 3508 TC Utrecht The Netherlands E-mail: m.dijst@geo.uu.nl Abstract: It is widely believe that providing activity locations that close from residential areas would reduce the travel amount of the residents. However, it has not been clear how close the location is should be from the residents’ house. In this paper, using Dutch National Travel survey, a TTR (time travel ratio) index is used to measure an acceptable travel time for individual to do a certain type of activity within acceptable activity duration. The aims of the paper are to explore the TTR for different type of non-work activities, to explore different variation in TTR for different activity duration, and to analyze the influence individuals’ socio-demographic variables, household structure, built environment, modal choices and travel parameters to the TTR values. The understanding of individual’s TTR behaviour for each activity will helps planners to improve projections of spatial choices and the interplays of urban space, socio-demographics and travel behaviour, including modal choices. This will aid the planners to provide an efficient and effective infrastructure planning and management that account for the needs and the behaviours of the residents. The results show that the value of individual travel time ratio depends on the type of the activities, individual commitments, available travel mode, and activity locations. Each activity has unique trade-off relationship between their activity duration and their travel time. Each activity also has its own turn-over point (a point where an individual would start to do the trade-off). The analysis also shows that TTR value is not only influenced by individual’s activity commitments, resources and constraints, but also the trade-off within household commitments and constraints. 1 Corresponding Author