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The Journal of The Korea Institute of Intelligent Transport Systems Vol.5 No.1 pp.55-63
교통통제장치 적용에 따른 교통안전도 향상에 관한 연구
Estimation of Traffic Safety Improvement by Applying a Traffic Control Device
Abstract
Speeding is one of the major causes of traffic accidnets in urban areas. Driver feedback sign(DFS) is a traffic control device that can be used for many traffic environments including work zones, school zones, and roadways. In this paper, the effectiveness of DFS was evaluated through a field study using speed data collected from before and after study periods. In addition traffic safety improvement was also quantitatively estimated using the variance of speed data collected. Staistical test results showed that the speed difference was statistically significant, and the distribution of speed data was also shifted greatly. Therefore, it was concluded that installing the DFS in roadways might lead to unifomity of speed of traffic flow, thus, potential safety improvement might be expected.
