Adaptation luminance of driver's eyes approaching a tunnel entrance in daytime.

Author(s)
Narisada, K. Yoshikawa, K. & Yoshimura, Y.
Year
Abstract

In order to make the driver approaching the entrance of a tunnel in daytime able to perceive visual information in the relatively dark tunnel ahead, a sufficient luminance has to be provided over the full length of the threshold zone of the tunnel. In this paper a measuring method to obtain the adaptation luminance is described and the results of measurements by the method at the access zone to actual motorway tunnels in daytime is discussed.

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Publication

Library number
B 18584 (In: B 18580) /83.2/54/
Source

In: Proceedings of the 19th Conference Session of the International Commission on Illumination CIE, Kyoto, 1979, p. 409-413, 1 fig., 6 graph., 10 ref.

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