Sujet
Complex Electric Traffic Signal
Légende
This complex electric signal light system automatically controls traffic for both morotists and pedestrians at a congestion point by flashing "walk" and "don't walk" signs in coordination with red and green "stop" and "go" signals for vehicular traffic. At certain times of the day, traffic patterns change to "thru only" or "right only" as well, Washington, DC, 1949. (Photo by United States Information Agency/GG Vintage Images)
Date
1949
Crédit
Photo12/Universal Images Group/GG Vintage Images
Notre référence
UMG22A00_489
Licence
Droits gérés
Format disponible
52,7Mo (1,8Mo) / 31,9cm x 41,4cm / 3768 x 4890 (300dpi)