论文部分内容阅读
概括地回顾了一些关于离线(或脱机)交通信号灯优化设计的方法.其中包括用于在孤立交叉口的单点和区域性的联动控制系统.离线方法在设计时一般利用已有调查出来的交通数据作为固定的输入资料,这个跟实时设计方法所要求的从感应器即时检测出来的情况作为设计依据是有本质上的区别.但一般沿用的信号配时设计方法都需要依靠已刻在行车线道上(允许通行)的方向指示标志为设计基础,但这个方向指示在确定后在整个优化过程中是维持不变的,这就限制了交通流量在线道上的分布,从而大大减低配时的灵活性,在这样情况下优化出来的结果肯定不会是最好的.直至近期,以行车线道为基本单位的配时设计方法(英文名称为Lane-based method;中文可称为线道法)发展起来.这个方法是由传统的Phase-based method (相位法)所演变出来的.线道法不但包含所有相位法的特点,而且更能为原本受约束的线道和配时设计进行全面优化.线道法可在单点交叉口和区域性的联动控制系统上应用.文末提出一些未来研究发展的新方向.
In a nutshell, there are several ways to optimize the design of off-line (or off-line) traffic lights, including single-point and regional linkage control systems at isolated intersections. Off-line methods are generally designed at design time Traffic data as a fixed input data, which is essentially different from the real-time design method of detecting the sensor from the real-time design as a design basis.But the general design method of signal timing need to rely on has been carved The direction indicator on the lane (allowing traffic) is the basis of the design, but the direction indicator remains unchanged throughout the optimization after it has been set, which limits the distribution of traffic on the lane and greatly reduces the flexibility of timing The result of optimization in such circumstances will certainly not be the best until recently, with the lane of the basic unit of the timing design (English name is Lane-based method; Chinese can be called the lane method) Developed by the traditional phase-based method (phase method) evolved out of line law not only includes all the characteristics of the phase method, and And can be more fully optimized for the originally constrained lane and timing design.The laneway method can be applied to single point intersections and regional linkage control systems.Finally, some new directions for future research and development are proposed.