Research problem statements on traffic control devices.

Research problem statements on traffic control devices.

Podrobná bibliografie
Korporativní autor: National Research Council (U.S.). Transportation Research Board
Médium: Kniha
Jazyk:English
Vydáno: Washington, D.C. Transportation Research Board, National Research Council [1988]
Edice:Transportation Research Circular Number 335
Témata:
Traffic signs and signals > Research.
Road markings > Research.
Roads > Safety measures > Research.