| Title |
Road Weather Conditions by Lighting Systems Laboratory Test Research |
| Authors |
Mi-Ae Lee ; Seung-Hun Han ; Yeon-Hwa Kim |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2016.30.8.015 |
| Keywords |
Road Lighting Pole Type ; Inclement Weather Conditions ; Multi-Distribution ; Optics Design |
| Abstract |
To derive a way to resolve the chronic problem of sizable traffic accidents under bad weather, the road surface luminance and the obstacle contrasted luminance were measured for the visibility test with the developed luminaire which simulated light distribution in the indoor laboratory where a foggy situation was implemented. By the result, the road surface luminance under foggy rain appeared higher than that of the dry road surface and it suggested that the road surface luminance, which the road lighting grade is based on, was not suitable for visibility assessment under abnormal weather conditions. Under the obstacle test, counter beam light distribution provided the highest contract luminance and it was considered that it was necessary to adjust light distribution under abnormal weather conditions. For the test on the obstacle color under fog, 6 colors of red, blue, green, yellow, orange and gray were used to measure the obstacle contrasted luminance and the yellow color provided the far superior result. Through this experiment, the lighting pattern and trend of street lights under abnormal weather conditions were understood. However, it is necessary to further seek a way to apply this result to actual road lighting. |