실시간 주기별 교차로 신호체계 최적화에 따른 지체변화에 관한 연구

Abstract

Today the arterials play a key role in urban transportation. However, they experience a severe congestion with the upstream or downstream traffic on the signalized intersections regardless of the peak periods. Thus, the purpose of this study is to identify the real-time cycle-based traffic characteristics, analyze the real-time cycle-based delay and the existing hour-based delay shifts by the simulation delay model and finally suggest the necessity of the operation of the real-time cycle-based signalized intersections in urban area.

From the transportation system analyses, and the real-time cycle-based delay and the existing hour-based delay analyses by the simulation delay model on the signalized intersections, the following results were obtained:

ⅰ) Traffic flow did not show a distinct difference depending on the time periods. Rather, more traffic flows were concentrated on the signalized intersections in the non-peak periods when compared with the on-peak periods.

ⅱ) The delay shifts were also shown to be a big difference of 30% to 80% between the real-time cycle-based signal and the existing hour-based signal operations before and after optimization processes depending on the time periods.

ⅲ) The delay showed the maximum deviation of 20 percentage between the real-time cycle-based signal and the existing hour-based signal operations by the simulation process depending on the time periods.

ⅳ) The real-time cycle-based signal operation was shown to have a higher explanatory power than the existing hour-based signal operation through the simulation and optimization processes depending on the time periods.