HPMS Through Lanes

The Idaho Transportation Department's (ITD) Roads and Highways Road Network Linear Referencing System (LRS) HPMS through lanes event polyline feature class represents the number of lanes designated for through traffic movement in the inventory direction. Through lanes exclude auxiliary, turning, and parking lanes not intended for continuous travel. Associated attributes (through lanes source, ascending lanes, and descending lanes) provide supporting context for the origin of the data and direction-specific lane counts on grades. The dataset is used to evaluate roadway capacity, determine performance metrics, and support investment modeling. Data are reviewed and updated annually as part of ITD’s Highway Performance Monitoring System (HPMS) submittal to the Federal Highway Administration (FHWA). This layer is an export from Roads and Highways that represents only the active records within the LRS. These are current “working” records. For the static, published data, please see the records stored at: https://www.fhwa.dot.gov/policyinformation/hpms.cfm This content item is a sub-layer of the Highway Performance Monitoring System (HPMS) authoritative feature layer. Metadata爱达荷州运输部（Idaho Transportation Department，ITD）道路与公路系统的路网线性参考系统（Linear Referencing System，LRS）HPMS直通车道事件折线要素类，代表了清查方向上指定用于直通交通运行的车道总数。直通车道不包含辅助车道、转弯车道及未用于连续通行的停车车道。相关属性字段（直通车道来源、上行车道、下行车道）可为数据来源以及坡度方向对应的车道计数提供辅助说明信息。该数据集可用于评估道路通行能力、确定绩效指标，并为投资建模提供支撑。作为爱达荷州运输部向美国联邦公路管理局（Federal Highway Administration，FHWA）提交公路性能监测系统（Highway Performance Monitoring System，HPMS）相关材料的工作环节之一，该数据每年都会进行审核与更新。此图层为道路与公路系统的导出产物，仅包含线性参考系统内的有效记录，均为当前的"在用"工作记录。如需获取静态已发布数据，请访问以下链接中的存储记录：https://www.fhwa.dot.gov/policyinformation/hpms.cfm。本内容项为公路性能监测系统（HPMS）权威要素图层的子图层。元数据