【摘要】 针对信号交叉口实际通行能力与理论计算结果存在较大偏差的问题,运用运动学方程,分析了车辆队列的停车位置和车间距对车辆通过交叉口延误时间的影响。研究结果表明:一个给定的交叉口,通过调节信号的相位和周期的方法能提高路口的通行能力,但调节能力有限;车间距过大或过小都会增加车辆通过路口的延误时间,从而导致交叉口的通行能力下降;当停车间距在4~8 m之间时,可有效地降低等待队列长度及车辆通过交叉口的启动延时时间,从而最大可能地提高信号交叉口的通行能力。更多还原

【Abstract】 In order to understand the partial difference between theoretical and practical capability on the signal intersection,the kinematical equation of the starting and leaving of vehicles’ queues was established to analyze the relationship between parking position and parking space with the delay of vehicles’ passing through the intersection.The results indicate that the passing capacity of a given intersection can be improved by adjusting the cycle and phase of signal,but the adjusting function was limited;when the parking space between two vehicles on intersection is too large or too small,the passing delays of vehicles will increase,and the passing capacity of the intersection will decline;when the parking space is from 4 m to 8 m,the waiting queue and start-up time of vehicles on the intersection can be controlled clearly,and this can increase the passing capacity of the intersection.5 figs,11 refs.更多还原