{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "This dataset contains the Roads and Highways Road Network Linear Referencing System (LRS) HPMS lane width event polyline feature class which provides lane width measurements for Idaho\u2019s public roadway segments as reported through the Highway Performance Monitoring System (HPMS). The data supports roadway design, safety analysis, performance evaluation, and asset management activities across Idaho\u2019s state and local highway network.", "description": "
The Idaho Transportation Department's (ITD) Roads and Highways Road Network Linear Referencing System (LRS) HPMS lane width event polyline feature class represents the measured or designated width of a single travel lane within a roadway segment, expressed in feet. Lane width is a critical design element that influences roadway capacity, vehicle operating speed, and overall safety performance. <\/SPAN><\/P> Values are obtained from roadway design plans, construction records, and pavement inventory systems maintained as part of ITD\u2019s Highway Performance Monitoring System (HPMS) data collection and reporting process to the Federal Highway Administration (FHWA). Both rural and urban lane widths are recorded to support design consistency, maintenance planning, and performance monitoring. <\/SPAN><\/P>