城市外围区干道朝夕交通流通常呈现出不均衡现象,上午进城交通量大,下午出城交通量大.而以往很多这样类型的干道交叉口,采用交通流对称放行方式不能满足需求,增加了延误,使通行效率降低.改变以往采用对称相位的设置方法,设计交叉口单口放行的方法,加之以绿波协调控制系统,使得道路资源得到充分利用,提高道路的通行率.以昆明市白龙路朝夕交通流量不均衡现象为例,结合信号配时优化即交叉口交通流单口放行方法,设计不同时段的绿波协调控制系统.通过TransModeler进行交通仿真,结果表明双向非对称的交通流干道采用单口放行并加之以绿波控制对交叉口的延误大大减少,提高通行效率.%For the phenomenon of uneven traffic flow in some urban roads of outlying areas of the city that there are more traffic flow driving into the city centre in early morning, however there are more traffic pulling out from the city centre in the afternoon. But in the past many such types of roads intersection used symmetry release means of traffic, it could not meet demand, increased delay and congestion. The design of symmetrical phase is changed used in the past and designed mode of one-phase-one-approach, then adopted green wave coordinated control system so that road resources could be fully utilized and improved travel efficiency. Took the Bailong road as a case, combined the means of one-phase-one-approach and designed green wave signal coordinated control system in different times. Used TransModeler to simulate, result proved that adopting unparallel traffic flow green wave coordinated control system for uneven traffic flow in some urban roads can decrease delay effectively and it Has advantages in improving traffic conditions.
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