| Title |
Importance Factor Analysis on Mobility Facilities for the Transportation Disabled by Using Structural Equation Model |
| Authors |
안우영(Ahn, Woo-Young) ; 최리라(Choi, Lee-Ra) |
| DOI |
https://doi.org/10.12652/Ksce.2014.34.3.0939 |
| Keywords |
교통약자;구조방정식;외생잠재변수;내생잠재변수 Transportation disabled;SEM;Exogenous latent variables;Endogenous latent variables |
| Abstract |
Road conditions which obstruct the driver from seeing road markings, such as in the evening or in the rain, due to the lack of a light source gives way to increasing the risk of traffic accidents. In order to increase road safety, the Korea Expressway Corporation set up a pilot project which used high-quality materials along a section of the Gyeongbu Expressway between Daejeon and Pangyo. There is little research on high-quality materials in the field of pavement marking. This study introduces high-quality materials used in pavement materials, presents the results of a survey conducted to examine the effect of the pilot project and analyzes traffic accident data from before and after the implementation of the pilot project. The survey results show that 87% of the respondents were highly satisfied with the pilot project. With the goal of evaluating the effect of the pilot project, this study used traffic accident data provided by the Korea Expressway Corporation accident data and performed a before-after study of the number of traffic. The results of data analysis show that there were 62 and 48 traffic accidents before and after the implementation of the pilot project. In addition, the result of Emperical Bayes Method indicates that there is an 41.7% decrease in the number of traffic accidents as an effect of High-quality Pavement Marking Materials. |