One billion new city dwellers — How will they travel?

Preface This paper is an adaptation of the first Reuben Smeed Memorial Lecture given at University College London on 12 March. This series of lectures has been promoted by the late Reuben Smeed's former friends, colleagues and admirers as a tribute to him for his contributions to traffic science and engineering over a quarter of a century. Reuben Smeed's unique combination of imagination, rigorous objectivity and determination, coupled with his humour and warmth brought him rare distinction as a researcher and teacher. The subject of the paper is wide ranging and complex and it has not been possible to treat all parts of it with the thoroughness that Reuben Smeed would have sought. However there is little doubt that it would have appealed to him as one well worth tackling.