摘要
为定量描述同向双车道中一条车道上前导车的横向偏移以及相邻车道行车状况对跟驰车的影响,建立考虑横向偏移和超车可能性的跟车模型。对不同行驶情况下超车可能性系数进行分类讨论和量化。通过线性稳定性理论分析了模型的稳定性条件,在开放性的边界条件下对不同参数下模型进行数值模拟。模拟结果显示,车流密度较小车速较大时,横向偏移系数越大超车可能性越大,对车流疏通有促进作用,反之,在车流密度较大车速较慢时,会加剧堵塞发生。模拟结果验证了模型的有效性,也能较客观反映现实中同向双车道上跟车状态。
A car-following model considering lateral offset and overtaking possibility was established to quantitatively describe the influence of the lateral offset of leading cars in a dual-lane with same direction and the running status of cars in the neighboring lane on the following cars. The overtaking ratios under different driving conditions were discussed and quantified. The stability conditions of the model were analyzed by linear stability theory, and numerical simulation was conducted in open boundary conditions for different parameters. The simulation results showed that on the basis of smaller traffic density and faster vehicle velocity, the higher the ratio of the lateral offset the larger the overtaking possibility, which will have a promoting effect on the traffic dredge. On the contrary, the vehicle velocity was lower when the traffic density was larger. When the ratios of lateral offset and overtaking possibility were larger, the occurrence of traffic congestion would be aggravated. The simulation results verify the validity of the model, which can also objectively reflect the car following state on the dual-lane in reality.
出处
《森林工程》
2014年第6期98-103,共6页
Forest Engineering
基金
上海市教委科研创新重点项目(12ZZ137)
关键词
跟车模型
双车道
横向偏移
超车可能性
车头间距
稳定性分析
car-following model
dual-lane
lateral offset
overtaking possibility
space headway
stability analysis
