Traffic signals 5 reports ; prepared for the 52nd annual meeting.

Traffic signals 5 reports ; prepared for the 52nd annual meeting.

Detalhes bibliográficos
Autor Corporativo: National Research Council (U.S.). Highway Research Board
Formato: Livro
Idioma:English
Publicado em: Washington, D.C. Highway Research Board, National Research Council 1973.
Colecção:Highway research record no. 445.
Assuntos:
Traffic signs and signals.
Electronic traffic controls.