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在NaSch模型的基础上,制订了超车规则,建立了双向两车道混合车辆的元胞自动机交通流模型.用计算机模拟了车道密度对称和不对称两种情况下不同参数的混合车辆交通流,得出了相应的速度、流量与密度关系的基本图.经分析发现,双向两车道混合车辆交通状态可分为快车特性区、准慢车特性区和慢车特性区;两车道上车辆密度的不对称性对交通流有重要的影响.
On the basis of NaSch model, the overtaking rules were formulated and the cellular automata traffic flow model of two-way two-lane hybrid vehicle was established.The mixed traffic flow with different parameters under both symmetrical and asymmetrical lane density was simulated by computer, According to the analysis, the traffic conditions of two-way two-lane hybrid vehicles can be divided into express train characteristic area, quasi-local train characteristic area and local vehicle characteristic area. The two-lane vehicle density asymmetry Sex has a major impact on traffic flow.