This information guide presents common conventions and guidance for implementing the All Roads Network of Linear Referenced Data (ARNOLD) requirements of the Highway Performance Monitoring System (HPMS). The manual covers the four overarching steps for a statewide, all-roads linear referencing system (LRS) implementation process:

• Implementation planning.
• Data collection and integration.
• Building the LRS.
• Ongoing data maintenance.

The guide provides users with recommended procedures, data elements, and business rules for compiling, submitting, managing, and improving their all roads inventories and linear-referenced networks.