VISIBILITY OF LED ROAD SIGNS IN FOGGY CONDITION (PO90, 1109-1116)
- Secure PDF Files
- Conference Proceeding by Commission Internationale de L'Ecl
- Category: CIE
$22.26
$11.00
Two psychophysical experiments were carried out in this study. The first experiment was conducted in a real road where an LED road sign was set up under two types of street lamps. Observers were asked to assess the visibility of an LED road direction sign placed on the road. And the second experiment was a computer simulation experiment, conducted using 130 simulated images as the stimuli presented on computer monitor situated in a darkened room. The experimental results show that the closer the sign was to the observers, the more visible the sign tended to appear. In addition, the higher the luminance contrast was for the sign, the more visible the sign tended to appear.
PDF
All of our standards document are available in PDF (Portable Document Format), an electronic, downloadable format.You will be able to download the file in your account downloads.
Multi-User Access
After purchasing, you have the ability to assign each license to a specific user.
Printable
At any time, you are permitted to make printed copies for your and your members' reference use.
