CAJ | 학술논문

通过引入元胞长度和元胞交通流密度2个参数，克服了原元胞传输模型( CTM)需要所有元胞统一长度的局限性。同时，结合传统的基本图方法和三相交通流理论，构建了考虑迟滞现象的MCTM模型，并研究了突发事件下快速路通行能力下降导致交通拥堵的形成及消散过程。仿真结果表明：模型能恰当反映城市快速路突发事件下的交通拥堵演化特点。
통과인입원포장도화원포교통류밀도2개삼수，극복료원원포전수모형( CTM)수요소유원포통일장도적국한성。동시，결합전통적기본도방법화삼상교통류이론，구건료고필지체현상적MCTM모형，병연구료돌발사건하쾌속로통행능력하강도치교통옹도적형성급소산과정。방진결과표명：모형능흡당반영성시쾌속로돌발사건하적교통옹도연화특점。
Cell transmission model ( CTM ) is equivalent to discrete approximation from macro kinetics LWR model, which can be utilized to capture such traffic dynamics as traffic flow shock waves and traffic jam. Two parameters including cell length and cell density were introduced into the MCTM to avoid the uniform cell length limitation. Meanwhile, combining traditional fundamental diagram approach and three-phase traffic theory, the hysteresis loop characteristics were combined into the MCTM model. This paper employed the MCTM model to investigate the traffic congestion forming and diffusing process due to road capacity drop-down in the traffic incident. Simulation result shows that this presented model can effectively meet the modeling demands of reality traffic congestion evolution characteristics with incidents in urban expressway system.