道路车辆流量及事故分析预警系统数据
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随着越来越多的家庭选择自驾游出行，旅游高峰事情道路堵车或事故造成出行体验极差，对于一些交警无法迅速到场的道路（如景区内部路），可通过预警系统由内部管理人员对车辆进行有效引导或分流，提高道路通过率.使用AI摄像机对同一车辆进行虚拟拌线检测，记录车辆触碰虚拟线Line_A 和Line_B的时长，并根据先后触碰条件判别车辆行驶方向写入travel字段。按300 / | Line_B - Line_A |计算车辆瞬时车速写入Speed字段，用于判断道路通行效率。比如：每10分钟做为一个分析时段，该时段内所有记录Speed平均值>10 则表示道路通畅，10>Speed平均值>1则表示道路拥堵，Speed=0记录比例大于90%，则表示道路无法通行，系统预警由内部人员现场指挥分流。AI摄像机可同时对道路中线设置虚拟线Line_C，并记录车辆碰线时长写入字段Line_CT以及触发计数字段COUN_C，用于统计越线车流通行率及通行数量，当一个分析时段内超过90%记录Line_CT>0 则表示道路有障碍或有事故，系统预警由内部人员现场指挥分流。
As an increasing number of families opt for self-driving tours, traffic jams or accidents on roads during peak tourism seasons severely degrade travel experiences. For roads where traffic police cannot arrive promptly (e.g., internal roads within scenic spots), an early warning system can be deployed by on-site managers to effectively guide or divert vehicles, thereby improving road throughput. AI cameras perform virtual tripwire detection on the same vehicle, recording the duration during which the vehicle touches the virtual lines Line_A and Line_B. The driving direction of the vehicle is determined based on the order of touching these two lines, and the result is written into the "travel" field. The instantaneous vehicle speed is calculated as 300 divided by the absolute value of the difference between Line_B and Line_A, and the calculated value is written into the "Speed" field, which is used to evaluate road traffic efficiency. For example, taking every 10 minutes as an analysis period: if the average Speed of all records in the period is greater than 10, the road is considered unobstructed; if the average Speed is between 1 and 10, the road is considered congested; if the proportion of records where Speed=0 exceeds 90%, the road is deemed impassable, and the system will alert on-site managers to divert traffic on site. AI cameras can also set a virtual line Line_C along the road center line, recording the duration of the vehicle touching Line_C into the "Line_CT" field and triggering the counting field COUN_C. These fields are used to count the crossing vehicle traffic rate and traffic volume. If the proportion of records where Line_CT>0 exceeds 90% within an analysis period, it indicates that there are obstacles or accidents on the road, and the system will alert on-site managers to divert traffic on site.
