BS 505(1971) : 1971已作废
SPECIFICATION FOR ROAD TRAFFIC SIGNALS
出版：British Standards Institution
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基本信息
标准编号： BS 505(1971) : 1971
发布时间：1971/1/1 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：36
标准简介
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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