Required luminance of red and green traffic lights was investigated under various conditions, with respect to surround; it was found that, to ensure equal perceptibility by day and night, luminance of signal must be increased 70 times; proposed electric signal control system is described.


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    Title :

    Visibility of street traffic signals


    Additional title:

    Ueber die Sichtbarkeit von Strassenverkehrs-Signalen


    Contributors:
    Adrian, W. (author)

    Published in:

    Lichttechnik ; 15 , n 3


    Publication date :

    1963


    Size :

    4 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    German






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