Hourly Volumes 2010

Tabular data containing 2010 hourly traffic counts from continuous and program count stations in the District of Columbia, Maryland, and Virginia that are provided to TPB by the respective state DOTs. The hourly counts are processed, listed by direction, and also matched to the appropriate directional network link. Separate traffic volume tables are provided for each state. The tables are in CSV format. This tabular data can be joined to the Count Stations layer (point) by the StationID field. The data also contains the field ABPair that refers to the network link which is associated with the count station in order to be used in the network modeling process. The latest network link layer can be found here. Note that network layers are year-specific; ABPair on historical hourly volume tables may not match the ABPair on the current network link dataset. In cases where a count station is associated with more than one network link, the volume tables will contain one record for each link for each hour. This situation occurs where nearby stations are used for counts on screenline links and also in areas where one set of high occupancy vehicle (HOV) links is associated with multiple sets of low occupancy vehicle (LOV) links. This is important to note, so that counts in the volume tables are not summed which would result in double counting.本数据集包含华盛顿哥伦比亚特区、马里兰州及弗吉尼亚州境内连续式计数站与程序式计数站的2010年小时交通流量数据，数据由各州交通运输部（Department of Transportation, DOT）提供给TPB。该小时流量数据已完成标准化预处理，按行车方向分类排序，并匹配至对应方向的路网链路。各州均提供独立的交通流量数据表，所有数据表均采用CSV格式。本表格数据可通过StationID字段与计数站点图层进行关联。数据中还包含ABPair字段，该字段对应与计数站绑定的路网链路，可用于路网建模流程。最新的路网图层可在此处获取。请注意，路网图层具有年份特异性，历史小时流量数据表中的ABPair字段值可能无法与当前路网链路数据集的ABPair字段值匹配。当一个计数站对应多条路网链路时，流量数据表将为每小时的每条链路生成一条独立记录。此类场景常见于：以邻近站点统计屏幕线链路流量的场景，以及一条高占用车辆（High Occupancy Vehicle, HOV）链路关联多条低占用车辆（Low Occupancy Vehicle, LOV）链路的区域。请注意该细节，以免对流量数据表中的计数进行求和操作，从而导致重复计数。