This thesis owes its origin to many sources. The introduction to traffic studies began with a two week visit to the Road Research Laboratory, and advice continued over the following three years. It was made financially possible with a D.S.I.R. Research Studentship, and through the Department of Geography, University of Durham, and the Burgh of Perth. The willing help of the Burgh Surveyor's Department of Perth, and later the Scottish Development Department, ensured the successful completion of the field work. The list of helpful people and organisations is too long to itemise individually. However mention must be made of the Burgh Surveyor of Perth and his staff, numerous citizens and firms in Perth, and Perth local press, the Scottish Development Department, and the Joint Urban Planning Group. In Durham constant help was available from my supervisor, Professor W.B. Fisher, from Mrs. E. Templeton and Dr. Horgood of the Computer Unit, and from Dr. E. Sunderland. In Vancouver, financial help was available from the Department of Geography, Simon Eraser University in the final preparation of the thesis. Finally, and not least, thanks must go to my wife, who has given me constant encouragement and advice
