Effectiveness Assesment of Bus Signal Priority Systems

Abstract This study intended to evaluate the operational performance change from the introduction of the bus signal priority system using the field data. To complete the objective, travel time and volume data were collected from the before and after study, then the distribution of individual vehicle's travel time and the difference of travel time and traffic volume were compared respectively.Analysis results showed that no significant volume change was observed from both passenger vehicle and bus for the major and cross streets. It was identified that the quality of travel time distributions of passenger vehicle and bus was improved after introducing the bus signal priority system. In terms of average speed, passenger car in a major direction increased by 6.5% and bus increased by 10.5% in general. Statistical tests showed that those speed differences were statistically significant at the 95% of confidence level. The results of this paper will be a good source for further research in the area of bus signal priority control.Key words : Bus signal priority, DSRC, travel time, traffic volume, distribution †이 논문은 2010년도 정부(교육과학기술부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(NRF-2010-0029450) * 주저자 : 아주대학교 ITS대학원 박사과정 ** 교신저자 : 아주대학교 환경건설교통공학과 교수 *** 공저자 : 아주대학교 환경건설교통공학과 부교수**** 공저자 : 경찰대학 치안정책연구소 책임연구관 †논문접수일 : 2012년 3월 15일†논문심사일 : 2012년 4월 2일†게재확정일 : 2012년 4월 9일