| Title |
Effectiveness Analysis of Phosphorescent Pavement Markings for Improving Visibility and Design Standards: Focusing on Expressway Accident Hot Spots |
| Authors |
이용주(Yi, Yongju) ; 이명환(Lee, Myunghwan) ; 최기주(Choi, Keechoo) |
| DOI |
https://doi.org/10.12652/Ksce.2016.36.4.0685 |
| Keywords |
차선도색;축광차선도료;노면표시;시인성;차선규격;사고다발구간 Pavement marking;Phosphorescent lane paint;Lane marking;Visibility;Lane design standard;Accident hot spot |
| Abstract |
Visibility of lane marking is impaired at night, or in case of rain, and thereby threatens traffic safety. Recently, various studies and technology have been developed to improve lane marking visibility, such as the extension of lane marking life expectancy (up to 1.5 times), improvement of lane marking equipment, improvement of lane marking visibility (32.7%) by applying phosphorescent material mixed paint, and expressway lane design standards alternative (length 6m, gap 12m, width 13cm: 27.8% of painted surface are reduced) adoption with ergonomic analysis. In this study, a set of cost-benefit analyses was performed for the cases where such techniques were applied. Based on the literature review, 26.9% of traffic accidents would be prevented by improving lane marking visibility by 32.7%; accident reduction benefit was calculated as much as 12.5 billion KRW. Meanwhile, total increased cost when introducing phosphorescent material mixed paint and lane design standards alternative is calculated as 30.6 billion KRW. However, economic feasibility could not be secured with 0.41 of cost-benefit ratio when applied to the expressway network as a whole. Additionally, cost-benefit (B/C) analysis was applied to each of the top 20 night accident hot spots and the results of B/C ratios were between 0.67 and 4.20, showing that 11 out of 20 spot sections of expressway can have economic feasibility. This results indicate, with this kind of pavement marking applied to accident hot spots in rural expressway, better visibility and economic feasibility can be guaranteed through traffic accident reduction. Some limitations and future research agenda have also been discussed. |