原文传递
Brightness of Colored Retroreflective Materials
| 题名： | Brightness of Colored Retroreflective Materials |
| 作者： | Schumann, J.; Sivak, M.; Flannagan, M. J.; Traube, E. C.; Hashimoto, H. |
| 关键词： | Pavement markings; Night visibility; Color; Reflective materials; Highway maintenance; Field tests; Brightness; Visual perception; Traffic safety |
| 摘要： | Retroreflective markings can be used effectively to enhance nighttime recognition of pedestrians. Past experimental work concentrated on factors such as retroreflective power, area, and positioning of retroreflective markings. However, the effect of color received less attention, mainly because the use of color reduces the retroreflective power of the material. A nightime field experiment was performed to address the effects of color. Subjects, seated in a car with low beam headlights on, had to rate the brightness of different colors of retroreflective materials. Independent variables included color (blue, green, yellow, orange, red, and white), ambient illumination, age, and sex. Results showed that chromatic stimuli were perceived as brighter than photometrically matched achromatic stimuli. The brightness ratings for the chromatic stimuli followed a U-shaped function of dominant wavelength, with the highest brightness ratings at both extremes of the visual range. Efficiency factors for each color relative to a white retroreflective material were calculated. |
| 总页数： | 31p |
| 报告类型： | 科技报告 |
相关文献
- BRIGHTNESS AND COLOR OF FLUORESCENT YELLOW AND FLUORESCENT YELLOW GREEN RETROREFLECTIVE SIGNS: COMPARISON OF LABORATORY AND FIELD MEASUREMENTS.
- Effects of Retroreflective Marking Color on the Detection of Pedestrians by Normal and Color Deficient Drivers
- Paving Materials for Heat Island Mitigation
- DETECTABILITY OF PAVEMENT MARKINGS UNDER STATIONARY AND DYNAMIC CONDITIONS AS A FUNCTION OF RETROREFLECTIVE BRIGHTNESS.
- Solar-Powered Light Emitting Diode Power Line Avoidance Marker Design.
- Texas - AASHTO Retroreflective Sign Sheeting Specifications.
检索历史
应用推荐
