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

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

Chi tiết về thư mục
Tác giả của công ty: National Research Council (U.S.). Highway Research Board
Định dạng: Sách
Ngôn ngữ:English
Được phát hành: Washington, D.C. Highway Research Board, National Research Council 1973.
Loạt:Highway research record no. 445.
Những chủ đề:
Traffic signs and signals.
Electronic traffic controls.