Open AccessThe influence of U-turn movement on the dynamics of traffic flow
Author(s) -
Hongwei Guo,
Ziyou Gao,
Xie Dong-Fan
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.058902
Subject(s) - movement (music) , turn (biochemistry) , cellular automaton , bottleneck , traffic flow (computer networking) , computer science , flow (mathematics) , simulation , mechanics , physics , artificial intelligence , computer security , nuclear magnetic resonance , acoustics , embedded system
U-turn movement is a common form of traffic organization in urban streets. A traffic flow model for U-turn movement based on the NaSch cellular automaton model is proposed to simulate and analyze the dynamics of U-turn movement. The results indicated that the U-turn movement has significant effect on the traffic flow, and it is a typical bottleneck. The U-turn movement can cause phase transition at small probability of vehicle generation and the critical flow also decreases obviously. The system with two U-turn movement is different from the system with one U-turn movement in traffic features such as phase transition and critical flux. The one U-turn system has a good performance. It is suggested that the system with a couple of U-turns may help mitigate the negative effect of U-turn movement in traffic planning and management.