| 基于变加速度的高速公路平直路段运行速度模型优化 |
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| 引用本文： | 林声.基于变加速度的高速公路平直路段运行速度模型优化[J].北方交通大学学报,2012(3):75-79. |
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| 作者姓名： | 林声 |
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| 作者单位： | 北京交通大学交通运输学院,北京100044 |
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| 基金项目： | 国家西部交通重大科技专项资金资助（200731822325,200731849026） |
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| 摘 要： | 通过研究典型路段车流的运行速度规律,分析汽车在平直路段上的实际行驶方式,提出了平直路段变加速度的运行速度测算方法和预测模型.该模型很好地描述出汽车在平直段上的实际加速状态,动态反映加速度与速度、加速度与期望速度间的变化关系,经与汽车直线路段速度距离加速曲线图表对比,速度预测模型精度较高.平直路段变加速度法优化、完善了现有平直路段的运行速度预测模型,为公路运行速度的合理取值提供了理论支持.
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| 关 键 词： | 交通安全 运行速度 预测模型 平直路段 变加速法 |
Research on accelerate function for operating speed on the straight road sections on highway |
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| LIN Sheng.Research on accelerate function for operating speed on the straight road sections on highway[J].Journal of Northern Jiaotong University,2012(3):75-79. |
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| Authors: | LIN Sheng |
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| Institution: | LIN Sheng ( School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China) |
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| Abstract: | The paper established the operating speed model suitable for Chinese road characteristics that is the basic research of road safety evaluation. The paper studied the vehicles operating speed pattern on typical road section, analyzed the vehicle real driving pattern on flat straight road section, and put forward the operating speed calculation method of flat straight road section based on its dynamic accel- eration. The method can well simulate the vehicle real-time acceleration state on flat straight road sec- tion, reflect the relation between the acceleration and speed, acceleration and expected speed in real- time, thus the accuracy of calculated operating speed from speed-distance chart is higher. As the paper has optimized and improved the existing operating speed application method for flat straight road section, it can provide the theoretical support to choose the reasonable operating speed during the road safety evaluation. |
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| Keywords: | traffic safety operating speed application model flat straight road section dynamic accelerated method |
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