Established Route Position Sign

Established Route Positions (ERP) are placed at 3 to 5 km intervals between RS. They assist in taking measurements between Reference Stations. Each ERP sign displays the previous RS number, and a measurement from the RS. The example (image) indicates that you are approximately 1.74 km past Reference Station (RS) 145.

Used in conjunction with Reference Station Signs (LR-RS), Ramp Reference Station Signs (LR-RS-R) and Kilometre Marker Posts (LR-KMP). Please refer to the NZTA Location Referencing Management System (LRMS) Manual for more information.