Characteristics which are desirable in different-purpose signals; optical means for providing effective distribution of light; methods of furnishing flexible control for speeding up traffic on main thoroughfares.
Speeding traffic with light signals
Elec. Wld
Electrical World ; 88 , n 22
1926
4 pages
5 Figs.
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
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