基于路网规划的道路立体交叉交通量预测方法

Traffic volume forecasting method at road interchange based on road network planning

School of Traffic and Transportation, Northern Jiaotong University, Beijing 100044, China

摘要: 道路立体交叉远景交通量预测是道路立交规划和设计的重要环节, 根据交叉口交通流特性和规划路网的路段交通量, 构造了立体交叉远景交通量预测模型。此模型通过迭代计算预测立体交叉口进口和出口之间的转向交通量, 同时对模型中参数的计算进行了讨论。通过某一实例对模型进行了验证, 结果表明该模型误差较小。
- 交通工程 /
- 道路互通式立交 /
- 交通量预测 /
- 路网规划
Abstract: Traffic volume forecasting at road interchange is a key part of road interchange designing and planning. According to the characteristics of traffic flow at interchange and the volume planning at road network, this paper put forward a new traffic volume forecasting model. The traffic turning volume from entrance to exit could be forecasted, and the calculation of the correlative parameters was discussed with the model. The forecasting model was tested by an example. The result shows that this model is feasible.
- traffic engineering /
- road interchange /
- traffic volume forecasting /
- road network planning

图 1 交通量预测程序

Figure 1. Procedure of traffic volume forecasting

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图 2 交叉口远景交通量预测流程

Figure 2. Procedure of future traffic volume forecasting at interchange

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表 1 交叉口现状交通流量和流向 /veh·h^-1

Table 1. Current traffic volume and directions at interchange

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表 2 2020年相交道路进出口交通量 /veh·h^-1

Table 2. Traffic volume of entrances and exits of crossways in 2020

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表 3 交叉口交通量预测结果 /veh·h^-1

Table 3. Traffic volume forecasting Result of interchange

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表 4 进出口预测交通量误差 /veh·h^-1

Table 4. Traffic volume forecasting Error of entrances and exits

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