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