En undersøgelse af Smith og Mcintosh (1974) i satellitbyen Stevenage i United Kingdom analyserede progressive forbedringer i kollektiv transport, herunder et mere simplificeret takstsystem og en nedsættelse af de absolutte takster.
A study in Stevenage, new town, United Kingdom by Smith and Mcintosh (1974) analysed progressive improvements in the public transport service including a more simplified fares system and a reduction in absolute fares charged.