In recent years, transportation research has seen a gradual shift from trip-based, via tour-based to activity-based models, in an effort to capture the true complexity of travel behaviour. This volume reflects an eventful decade of development and application of activity-based models. In three extensive sections, it: reviews a range of approaches to incorporating increased complexity in models; discusses how to obtain the rich data necessary to support complex models; and reports on real applications in action. It is an essential reading for any researcher or practitioner wishing to keep abreast of this key area of transportation research.