摘要
为研究城市复杂的混合交通,通过分析自行车的行驶特性,建立了包括元胞尺寸、速度、状态空间及属性、元胞的邻域与局部元胞演变规则的单向自行车二维CA模型。理论分析和数字仿真表明,该模型不仅能灵活有效地描述自行车流,而且其速度-密度特性和最大通行能力的数值范围均符合实际或经验数值。利用该模型还分析并仿真了车道数对单车道自行车通行能力的影响:随着车道宽度的增加,单车道通行能力随之增加,但幅度呈递减趋势,且车道数增长到一定时,通行能力不再继续增长。
For studying urban mixed - traffic, an one - way bicycle model based on two - dimension cellular automaton （CA） was brought forward after the moving characteristics of bicycle flow were analyzed. The size, velocity, state space and attribute, adjacent region of the cellular and the evolvement rules of local cellular were included in the model. Theoretical analysis and experimental results indicate that the model describes the bicycle flow effectively, and the digital simulation data on velocity-density-flux and maximum traffic capacity accord with practical or experiential data. The influence of lane number on bicycle capacity is investigated using this model. The simulation result shows that one-lane capacity increases alone with the added lane width, but the increasing magnitude is descending and will cease till a certain number of lanes. This trend completely obeys qualitative analysis.
出处
《公路交通科技》
CAS
CSCD
北大核心
2006年第1期125-129,134,共6页
Journal of Highway and Transportation Research and Development
基金
浙江省自然科学基金(601119)
关键词
自行车交通流
二维元胞自动机建模
自行车交通仿真
自行车通行能力
Bicycle flow model
2-dimention cellular automaton modeling
Bicycle traffic simulation
Bicycle traffic capacity
