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정영제(Youngje, Jeong),이호원(H.W., Lee),고광용(K.Y., Ko),김민성(M.S., Kim),최은진(E.J., Choi),김도형(D.H., Kim) 한국도시철도학회 2018 한국도시철도학회논문집 Vol.6 No.3
In this study, the tram signal priority strategies was developed and the effectiveness evaluation was performed using the tram test-track. As active tram signal priority algorithms, Early Green and Green Extension techniques were developed. We built a tram test-track of 1.5 kilometer-long and four virtual signal intersections. The case study showed that the tram delay has been improved by an average of 76% and the person delay considering the number of occupants of trams and general vehicles has been reduced by an average of 23%.
정영제 ( Jeong Youngje ),안계형 ( Ahn Gye-hyeong ),고광용 ( Ko Kwang-yong ),최은진 ( Choi Eun-jin ),김도형 ( Kim Do-hyeong ),( Choi Mee-sun ) 한국도로교통공단 2017 교통안전연구 Vol.36 No.-
In this study, the simulation evaluation system HILS(Hardware-In-the-Loop- Simulation) for tram signal priority evaluation system was developed. Early Green and Green Extension techniques as active tram signal priority algorithm are implemented in the signal controller. We developed a simulation evaluation system of tram signal priority algorithm by linking traffic signal controller and microscopic simulator VISSIM. The case analysis showed that the tram delay could be improved by more than 35%.
정영제 ( Jeong Youngje ),박순용 ( Park Soon-yong ),안계형 ( Ahn Gye-hyeong ),주두환 ( Joo Doo-hwan ),고광용 ( Ko Kwang-yong ) 한국도로교통공단 2016 교통안전연구 Vol.35 No.-
This research proposes a new tram progression model, Integrated Progression Model, which is a tram signal priority strategy on median tram lane. Integrated progression model was formulated for tram progression model which is capable of identifying the maximized auto bandwidth in the context of a fixed tram bandwidth. A tram that leaves a station during a green band can arrive at next station without unnecessary intersection delays and stops using the tram own green band. In order to guarantee a desired green time for other road users and minor streets, this integrated progression model determines the traffic signal timings for tram signal priority using only an offset.
능동식 대중교통 우선신호를 위한 최적 검지기위치 결정방법
정영제(Youngje, Jeong),안계형(Gyehyong, Ahn),고광용(Kwangyong, Ko),최은진(Eunjin, Choi) 한국도시철도학회 2017 한국도시철도학회논문집 Vol.5 No.1
In this study, the transit waiting time at signalized intersection for the active transit signal priority was modeled depending on the detector location, and this model can determine the detector location for the minimum transit delay in median exclusive tram or bus lane. With the application of the various transit speed and detector location, this study analyzed the change of transit delay. In addition, this study analyzed the active transit signal priority using a microscopic simulation under the same conditions with the analysis of transit waiting time. The result of microscopic simulation using VISSIM also showed the similar trend with the results from the waiting time model. This research made sure that the transit delay can be changed according to the detector location only, even if the delay of passenger car had a slight change.
정영제(Youngje, Jeong),박순용(Soon Yong, Park) 한국도시철도학회 2016 한국도시철도학회논문집 Vol.4 No.4
This research proposes a new tram progression model, Integrated Progression Model, which is a tram signal priority strategy on median tram lane. Integrated progression model was formulated for tram progression model which is capable of identifying the maximized auto bandwidth in the context of a fixed tram bandwidth. A tram that leaves a station during a green band can arrive at next station without unnecessary intersection delays and stops using the tram own green band. In order to guarantee a desired green time for other road users and minor streets, this integrated progression model determines the traffic signal timings for tram signal priority using only an offset.
충격파 이론을 이용한 대중교통 우선신호의 신호시간 산정모형
박상섭,조혜림,김영찬,정영제,Park, Sang Sup,Cho, Hye Rim,Kim, Youngchan,Jeong, Youngje 대한토목학회 2015 대한토목학회논문집 Vol.35 No.4
본 연구에서는 충격파 모형을 이용하여 능동식 우선신호의 최적 신호시간을 산정하기 위한 모형을 제시하였다. 본 신호 최적화 모형을 이용하여 능동형 우선신호 기법 중 Early green 및 Green extension이 적용되는 조건에서 충격파 면적을 산정할 수 있다. 본 연구에서는 평균통행시간 및 교차로 진출시각을 이용해 충격파의 발생 속도를 산정하기 위한 방법을 제시하였으며, 이를 이용해 우선신호로 인한 현시 변화량에 따라 충격파 면적 변화량을 산정할 수 있다. 또한 교차로 전체의 충격파 면적이 최소화되는 신호시간을 산정하여 우선신호로 인해 증가하는 일반차량의 지체를 최소화할 수 있도록 하였다. 우선신호 신호시간 산정 모형의 효과평가를 위해 VISSIM과 ComInterface를 이용한 미시적 시뮬레이션 분석을 시행하였으며, 이동류의 포화상태를 고려하여 지체 최소화를 위한 신호시간이 산정됨을 확인하였다. 독립교차로를 대상으로 하는 사례분석에서 우선신호를 위해 비우선현시를 균일하게 단축하는 전략 대비 본 모형에서 일반차량 지체가 10% 이상 개선됨을 확인하였다. 본 연구는 트램, BRT, 중앙버스 전용차로 등 대중교통 우선시설이 확산되고 있는 최근 국내 상황에서 신호교차로의 운영효율을 높이기 위한 새로운 우선신호 제어 방법을 제시하였다는데 의의가 있겠다. This research suggested the traffic signal calculation model of active transit signal priority using a shockwave model. Using this signal priority timing optimization model, the shockwave area is computed under the condition of Early Green and Green Extension among active transit signal priority techniques. This study suggested the speed estimation method of backward shockwave using average travel time and intersection passing time. A shockwave area change is calculated according to signal timing change of transit signal priority. Moreover, this signal timing calculation model could determine the optimal signal priority timings to minimize intersection delay of general vehicles. A micro simulation analysis using VISSIM and its user application model ComInterface was applied. This study checked that this model could calculate the signal timings to minimize intersection delay considering saturation condition of traffic flow. In case studies using an isolated intersection, this study checked that this model could improve general vehicle delay of more over ten percentage as compared with equality reduction strategy of non-priority phases. Recently, transit priority facilities are spreading such as tram, BRT and median bus lane in Korea. This research has an important significance in that the proposed priority model is a new methodology that improve operation efficiency of signal intersection.