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Investigation of visibility at tunnel entrances
Problems of driver's adaptation from daylight to darkness of tunnel and measurements carried out to determine smooth transition between outside daylight and tunnel entrance light; results show that luminance for first 100 m in tunnel should be 1/10 of that luminance encountered outside of tunnel.
Investigation of visibility at tunnel entrances
Problems of driver's adaptation from daylight to darkness of tunnel and measurements carried out to determine smooth transition between outside daylight and tunnel entrance light; results show that luminance for first 100 m in tunnel should be 1/10 of that luminance encountered outside of tunnel.
Investigation of visibility at tunnel entrances
Untersuchungen der Sehverhaeltnisse bei Tunneleinfahrten
de Boer, J.B. (author)
Lichttechnik ; 15
1963
4 pages
Article (Journal)
German
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