青海西宁市南绕城新宁路车流量交通指数数据

主要包括南绕城与新宁路路口车各方向流量数据由车辆进出检测区域统计而来，根据进出数据控制交通信号的实时调度。用途：1. 为实现后期重新划分时段，调整时段时间以及当前时段绿信比（指信号灯周期内可用于车辆通行的绿灯时间与整个周期时间的比例）提供原始数据；1）工作日周二~周四：根据各方向前两天车流量数据，与路口设计饱和流量值比值，分区段划分时段；2）工作日周一和周五~周日：根据各方向前两周周一当天车流量数据，与路口设计饱和流量值比值，分区段划分时段；2. 根据各时间段流量，可计算车道时间占有率，并可估算车道空间占有率和车头时距；3. 提供交通部门决策所需的路口交通流量，车道占有率等数据。1.数据来源：①交通流量（即流量检测线圈的车辆总和）：去向、左转、直行等可通过软件后台监测收集得到，来向需通过测算得到；②饱和流量（即10分钟最大能通过的数量）：根据以往测算可知，为固定值。③来向、去向交通指数需通过计算。 2.数据处理及应用：来向交通流量（a1）=左转交通流量（a3）+直行交通流量（a4）+右转交通流量（a5）；去向交通流量(a2)；来向交通指数=a1/1476*X；去向交通指数=a2/776*X(X指数区间值为1-3之间) ，当来向交通指数和去向交通指数小于等于3时，车流量属于正常范围，当来向交通指数和去向交通指数大于3以上时，需要根据不同路段和不同时间段来进行分析判断车流量是否拥堵，从而优化红绿灯时间提供参考依据，提高通行效率，从而可持续发展。

This dataset mainly includes traffic flow data in all directions at the intersection of South Ring Road and Xinning Road, which is collected by counting vehicles entering and exiting the detection zone, and is used to control the real-time scheduling of traffic signals based on the entry and exit data.

Purposes:
1. Provide raw data for the later re-segmentation of time periods, adjustment of time period durations and optimization of the green split (i.e., the ratio of the green time available for vehicle passage within a signal cycle to the total cycle duration) of the current time period:
1) For workdays from Tuesday to Thursday: Divide time periods into segments based on the ratio of the traffic flow data of each direction in the previous two days to the intersection's designed saturation flow rate;
2) For workdays on Monday, Friday to Sunday: Divide time periods into segments based on the ratio of the traffic flow data of each direction on the same Monday of the prior two weeks to the intersection's designed saturation flow rate;
2. Based on the traffic flow of each time period, lane time occupancy can be calculated, and lane space occupancy and headway can be estimated;
3. Provide traffic flow data at the intersection, lane occupancy and other data required for traffic department decision-making.

Data Sources:
① Traffic flow (i.e., the total number of vehicles detected by flow detection loops): Traffic flows in outbound, left-turn, through and other directions can be collected via background monitoring of the software, while incoming traffic flow needs to be calculated through measurement;
② Saturation flow (i.e., the maximum number of vehicles that can pass within 10 minutes): It is a fixed value based on previous measurements;
③ Traffic indexes for incoming and outgoing directions need to be calculated.

Data Processing and Application:
Incoming traffic flow (a1) = left-turn traffic flow (a3) + through traffic flow (a4) + right-turn traffic flow (a5); Outbound traffic flow (a2);
Incoming traffic index = a1/1476 * X; Outbound traffic index = a2/776 * X (the value range of X is between 1 and 3). When both the incoming and outbound traffic indexes are less than or equal to 3, the traffic flow is within the normal range. When the incoming and outbound traffic indexes exceed 3, it is necessary to analyze and judge whether the traffic flow is congested based on different road sections and time periods, so as to provide a reference for optimizing traffic light timing, improve traffic efficiency, and achieve sustainable development.

搜集汇总

数据集介绍

特点

该数据集记录了青海西宁市南绕城新宁路口的车流量、饱和流量和交通指数数据，每日更新，共577条记录。数据用于交通信号实时调度和交通部门决策支持，通过算法计算交通指数以优化红绿灯时间，提高通行效率。