The whole-life impacts of transport-charging interventions on business performance: A time-marching framework

A major concern of business with respect to transport-charging interventions is the context of revenue-investment policy, particularly how the timing of improvements may alter the time lags between fewer car journeys and more public transport journeys, and the problems for business in the intervening periods. The authors present a conceptual framework and case study of the whole-life effects on business performance. The impacts of charging occur as a sequence of gradually interacting changes, rather than as a single set of impacts, and positive amenity effects brought about through revenue hypothecation occur incrementally, taking years to achieve full effect. In the case study, a Delphi panel of business leaders predicted the time-marching effects of workplace-parking levies and road-user charging over a 24-year period in Nottingham. The findings revealed that the temporal nature of hypothecation results in minor fluctuations in performance for some business sectors in the first few years, but that these tail off as benefits gradually overwhelm disbenefits resulting in modest increases in performance for most sectors in the medium to long term. Many local authorities are reluctant to implement charging interventions due to concerns about economic vitality; it is expected that the results will inform policy and future research in this area.