Simon Henley
Otto Sill
Geoffrey H. Baker
Donald C. Shoup
Richard W. Willson
John A. Jakle
Robert H. Burrage
Great Britain. Ministry of Transport and Civil Aviation.
Unknown Author
Henci I. A. Latunussa
Eran Ben-Joseph
Edmund R. Ricker
British Road Federation.
David B. Miller
Eno Foundation for Highway Traffic Control
Institute of Transportation Engineers
Urban Land Institute
Jeremy Schmidt