摘要
自行车群释放速度特性是研究信号交叉口自行车交通流释放特性的重要指标.为了探求城市信号交叉口自行车群释放规律,结合调查数据对信号交叉口自行车群释放速度特性进行了分析.结果表明,绿灯亮起后自行车群中的单体自行车通过信号交叉口时均要经历加速、匀速2个阶段,其中在加速阶段,自行车群前面自行车的加速度具有一定的离散性,经验证服从正态分布,自行车群后面自行车的加速度趋于一致但表现出一定的延迟特性;在匀速通过阶段,自行车群前面自行车的稳定运行速度同样具有差异性,自行车群后面自行车的稳定运行速度趋于一致.对这些释放速度特性进行量化研究,给出具体计算模型.
The discharge speed characteristics of bicycle flow are important measures of effectives for signalized intersections. In order to examine the pattern of bicycle discharge at signalized intersections;the paper surveyed and analyzed the data of bicycle group discharge speed characteristics at signalized intersections. Results show that after the green light the individual bicycle will accelerate first and the pass through the intersection at a uniform speed. But in the accelerating stage,the acceleration of bicycle in front of the group follows a normal distribution,the acceleration of the rest of the group will be consistent but show some delay characteristics; In the uniform stage,the stable operation speed also have differences between the bicycles in front of the group; the rest of the group has consistent and stable operation speed.
出处
《道路交通与安全》
2015年第2期38-41,共4页
Road Traffic & Safety
关键词
信号交叉口
自行车交通流
释放速度
signalized intersection
bicycle traffic flow
discharge speed
