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.