The influence of horizontal projection angle of low-position road light on visibility under fog conditions

Qiang Fu; Haolang Yuan; Haitian Zhao; Haitao Wang; Siqi Zhao

doi:10.1117/12.3024770

14 February 2024 The influence of horizontal projection angle of low-position road light on visibility under fog conditions

Qiang Fu, Haolang Yuan, Haitian Zhao, Haitao Wang, Siqi Zhao

Author Affiliations +

Proceedings Volume 13018, International Conference on Smart Transportation and City Engineering (STCE 2023); 130184L (2024) https://doi.org/10.1117/12.3024770
Event: International Conference on Smart Transportation and City Engineering (STCE 2023), 2023, Chongqing, China

Abstract

In fog conditions, reduced visibility poses a significant risk for traffic accidents. Low-position road lighting can effectively enhance visibility during dense fog, thus improving traffic safety. This paper explores the relationship between lowposition road light’s horizontal projection angle and target visibility under simulated foggy conditions. Experimental results indicated that utilizing a smaller horizontal projection angle, where the light directly illuminates the target object from the front, results in higher object brightness, greater contrast with the background, and increased visible surface area, leading to improved visibility. Conversely, employing lateral lighting with a 90-degree horizontal projection angle, while illuminating the peripheral portions of the target object, reduced the visible surface area, resulting in lower visibility due to the reduced visual energy. The results could provide technical references for road lighting in foggy areas.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Qiang Fu, Haolang Yuan, Haitian Zhao, Haitao Wang, and Siqi Zhao "The influence of horizontal projection angle of low-position road light on visibility under fog conditions", Proc. SPIE 13018, International Conference on Smart Transportation and City Engineering (STCE 2023), 130184L (14 February 2024); https://doi.org/10.1117/12.3024770

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