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Abstract
Two experiments involving facial recognition and color identification have been done to evaluate the performance of road lighting with HPS and CMH. 48 subjects took part in the facial recognition experiment, and 43 in the color identification experiment, aged 20 to 40. In the facial recognition experiment we used 8 cards with different head portraits for subjects to identify. Three distances were recorded to compare the discriminability: when the subjects could just recognize the gender, guess the identity of the person, and make sure of the identity. In the color identification experiment, participants were asked to identify 8 color cards under HPS and CMH. Results showed that it is easier to recognize faces under CMH. The identification of yellow, green and blue color under CMH is significantly better, while identification of yellow-green under HPS is significantly better.
