TxDOT Ramp AADT Traffic Counts (Public)

This is a public and downloadable traffic data product of statewide average annual daily traffic (AADT) counts on ramp type roadbeds. Annual average daily traffic is a measure of transportation system use that represents the typical traffic volume at a location. Standard traffic monitoring AADT calculation methods vary depending on traffic data collection equipment, data type, and frequency. The TxDOT AADT count data in this layer is calculated as 24 hour camera vehicle count x monthly adjustment factor. In a small number of cases, other methods may be used at TxDOT's discretion. TxDOT AADT Traffic Counts Data Dictionary - Overview Updated: Annually in July Source: Statewide Traffic Analysis and Reporting System II (STARS II) Security Level: Public本数据集为可公开获取下载的、涵盖全州范围匝道型路基年度平均日交通量（AADT, Average Annual Daily Traffic）统计的交通数据产品。年度平均日交通量是衡量交通系统使用状况的指标，用于表征某一特定点位的典型交通流量。标准的交通监测AADT计算方法会根据交通数据采集设备、数据类型及采集频率的不同而有所区别。本图层中的TxDOT AADT统计数据采用24小时摄像头车辆计数乘以月度调整系数的方式计算得出。仅在极少数情形下，可由TxDOT自主决定采用其他计算方法。TxDOT AADT交通流量统计数据字典——概述：更新周期为每年7月；数据来源：全州交通分析与报告系统II（STARS II）；安全级别：公开。