HPMS Turn Lanes

The Idaho Transportation Department's (ITD) Roads and Highways Road Network Linear Referencing System (LRS) HPMS turn lanes event polyline feature class describes whether exclusive turn lanes are provided along a segment and the manner in which they are configured. These data help determine lane continuity, intersection control, and operational characteristics that influence capacity and performance. Turn lane data are collected through field inventories, design records, and roadway management databases and are reviewed 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》道路网络线性参照系统（Linear Referencing System，LRS）下的公路性能监测系统（Highway Performance Monitoring System，HPMS）转弯车道事件折线要素类，用于描述路段沿线是否设置专用转弯车道及其配置方式。此类数据可用于确定影响道路通行能力与运行性能的车道连续性、交叉口管控方式及运行特征。转弯车道数据通过野外勘测盘点、设计档案及道路管理数据库采集，并每年作为ITD向联邦公路管理局（Federal Highway Administration，FHWA）提交的公路性能监测系统（HPMS）上报材料的一部分进行审核。该图层为《道路与公路》系统的导出产物，仅包含线性参照系统（LRS）内的有效记录，均为当前“在用”业务数据。如需获取静态发布的正式数据，请参阅存储于以下地址的记录：https://www.fhwa.dot.gov/policyinformation/hpms.cfm 此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