The ISO Standard 17572-3 Intelligent Transport System (ITS)—Location Referencing for Geographic Databases—Part 3: Dynamic Location References, also known as “AGORA-C” is designed to improve the real-time accuracy of GPS and to allow the development of enhanced navigation services.

AGORA-C specifies a method for dynamic encoding and decoding of location references—that is, the unique identification of geographic objects such as road junctions, exit ramps, and postal addresses—into any map, without requiring predefined location codes or lookup tables. AGORA-C will notably be implemented in navigation systems for dynamic route guidance, public traffic management systems, and for other types of georeferenced services such as location-based services and points of interest. A copy of the AGORA-C standard can be obtained from the ISO online store.