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Reversal of Travel Time between ”Zipper” and ”Non-Zipper” Mergingin Traffic Flow
Ryosuke Nishi,Hiroshi Miki,Akiyasu Tomoeda,Katsuhiro Nishinari 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
Heavy traffic congestion occurs daily at an intersection of high way traffic. For releasing this congestion, the effect of ”zipper” merging of vehicles is discussed in this paper. This is the merging of vehicles on two lanes alternatively, and is achieved only by the local communication of vehicles between two lanes before merging. This ”zipper” merging is compared with the ”non-zipper” merging, which is the merging without interactions of vehicles before merging, interms of travel time. This investigation is performed by using numerical simulations with a new multiple-lane cellular automaton model which has slow-to-start effect. Numerical results show that the reversal of travel time between ”zipper”, and ”non-zipper” merging is observed as the change of slow-to-start effect.
Analysison Pedestrian Out flow through an Exit with an Obstacle
Daichi Yanagisawa,Ayako Kimura,Akiyasu Tomoeda,Ryosuke Nishi,Yushi Suma,Kazumichi Ohtsuka,Katsuhiro Nishinari 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
We have found that putting an obstacle in front of an exitin creases the pedestrian out flow through an exitinane vacuation situation from our experimets. In this paper, conflicts and turning, which affects the pedestrian out-flow significantly, is studied in detail to analyze the effect of an obstacle. In the floor field model, which is apedestri and ynamics modelu sing cellularauto mata, conflicts are taken in to account by the frictional parameter, which is not suffi-ciently realistic, and turning is neglected. Therefore, we have improved the frictional parameter to the frictional function, which is more realistic than the frictional parameter, and introduced the turning function, which represents the decrease in walking speeds when pedestrians turn. The frictional and the turning function clearly explain the mechanism of the effect of the obstacle, i.e., the obstacle blocks apedestrian moving to the exitand decreases the average number of pedestrians involved in the conflict.
Real-time Railway Network Simulation and Alleviating Congestion of Crowded Trains
Akiyasu Tomoeda,Mitsuhito Komatsu,Il Yun Yoo,Makoto Uchida,Ryo Takayama,Rui Jiang,Katsuhiro Nishinari 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
In the railway transportation service, on-time operation of trains is important. However, once an accident occurs, on-time operation be comes difficult due to a change of the passenger flow pattern. In this case, it is crucial to estimate the changing pattern. This paper presents a real-time Tokyo Metro Rail way Network simulator “KUTTY”, which can immediately estimate the change of the passenger flow pattern even if an accident occurs at the busiest area. Moreover, we have presented are scheduling method of homogenization to all eviate congestion of crowded train. It is found that our method is more efficient than the conventional one.