| 前车刹车状态对交通流的影响 |
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| 引用本文： | 韦艳芳,郭四玲,宋宣玉,薛郁. 前车刹车状态对交通流的影响[J]. 广西科学, 2005, 12(2): 102-105,110 |
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| 作者姓名： | 韦艳芳 郭四玲 宋宣玉 薛郁 |
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| 作者单位： | 广西大学物理科学与工程技术学院,广西南宁,530004;广西玉林师范学院物理与信息科学系,广西玉林,537000;广西大学物理科学与工程技术学院,广西南宁,530004 |
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| 基金项目： | 国家自然科学基金(10362001，19932020)，广西自然科学基金(034201)资助项目。 |
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| 摘 要： | 在交通流BJH模型基础上，考虑前车刹车状态对车流行为的影响，提出改进后的交通流BJH模型．模拟结果表明，在道路车辆密集程度不太大时，前车减速刹车是时断时续的影响车流；当道路车辆密集时，密度超过转捩点密度时，平均车间距小于安全车距，驾驶员对前车刹车的行为将作出刹车反应，这样导致了交通阻塞．计算机数值模拟反映了接近实测的交通通行能力以及交通的崩溃．
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| 关 键 词： | 交通流 元胞自动机模型 刹车状态 交通崩溃 |
| 文章编号： | 1005-9164(2005)02-0102-04 |
| 收稿时间： | 2004-09-30 |
Effects of the Braking State of Vehicle Ahead on Traffic Flow |
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| Wei Yanfang,Guo Siling,Song Xuanyu and Xue Yu. Effects of the Braking State of Vehicle Ahead on Traffic Flow[J]. Guangxi Sciences, 2005, 12(2): 102-105,110 |
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| Authors: | Wei Yanfang Guo Siling Song Xuanyu Xue Yu |
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| Affiliation: | Wei Yanfang~ |
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| Abstract: | Based on the BJH model of traffic flow,a modified BJH model by considering the effects of the braking state of vehicle ahead on traffic flow is proposed.It has been found from simulation that the effects of the braking state of vehicle ahead on traffic flow are intermittent when the road vehicles are not dense.However,when the road vehicles are dense,the density exceeds the turning point,the everage gap between vehicles is smaller than the safe distance,drivers brake as the reaction to the braking behavior of vehicle ahead,would lead to traffic jam.Moreover,the model is able to reproduce the complicated behavior of the real traffic,such as traffic breakdown. |
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| Keywords: | traffic flow cellular automaton model braking state traffic breakdown |
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