BS 505(1971) : 1971已作廢
SPECIFICATION FOR ROAD TRAFFIC SIGNALS
出版：British Standards Institution
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基本信息
標準編號： BS 505(1971) : 1971
發(fā)布時間：1971/1/1 0:00:00
標準類別：Standard
出版單位：British Standards Institution
標準頁數(shù)：36
標準簡介
Describes fixed and portable electric light signals operated from mains, generator or battery supply, for controlling road traffic. Also includes reference to operational requirements for the signals and their controller. Covers optical and constructional requirements and tests.
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