基于地图API技术的道路拥堵点交通运行状态分析

以东阳市老城区为例，提出应用地图API技术进行道路拥堵点交通运行状态分析的一般流程。首先，按照一定时间间隔分别截取研究范围的实时路况地图，根据路况颜色和持续时间识别道路拥堵点；其次，将研究范围划分成一定数量的网格，利用地图API技术批量获取各网格中心至拥堵点的预估通行时间，评估当前时刻下拥堵点的可达性；最后，获取堵点周边道路各时段的平均行程速度，评估道路运行状态的时间变化特征。通过地图API进行道路堵点识别和运行状态分析，能够大大减少研究者的前期工作量，为后续研究分析提供相对准确的基础数据。

Analysis on Traffic Operation State at Road Congestion Point Based on Map API Technology

Taking the old urban area of Dongyang City as an example, the general process of analyzing the traffic operation state at the congestion points by applying Map API technology is proposed. Firstly, the real-time road condition maps of the research area are captured respectively at certain time intervals, and the congestion points of road are identified according to the road condition color and duration. Secondly, the research scope is divided into a certain number of grids, and the map API technology is used to obtain the estimated travel time from the center of each grid to the congestion point in batches, which can evaluate the accessibility of congestion points at the current time. Finally, the average travel speeds of the roads around the congestion points in each period are obtained to evaluate the time variation characteristics of the road operation state. The map API is used to identify the rod congestion points and analyze the operation state, which can greatly reduce the preliminary workload of researchers, and provide the relatively accurate basic data for the subsequent research and analysis.