Signal Board

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Signal Board

 

a panel with signal lights or figures that light up. Signal boards are used for transportation traffic control, at stadiums and sports grounds for announcing the results of competitions, and for advertisements.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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