Abrantes, Pedro A.L.; Wardman, Mark R. - In: Transportation Research Part A: Policy and Practice 45 (2011) 1, pp. 1-17
Numerous travel demand studies have been carried out over the past five decades, many of which produce estimates of the value of travel time. This includes a rich body of largely unpublished evidence, which can provide valuable insights into the impact of variables such as GDP, travel distance,...