roads. This requirement will be referred to as the All Road Network of Linear Referenced Data (ARNOLD)". The ARNOLD requirement sets the stage for systems that utilize both LRS and coordinates. Both systems are useful in different contexts, and while using latitude and longitude is becoming very popular due to the availability of practical and affordable devices for capturing and displaying global coordinate data, the use of LRS has widely been adopted for planning, engineering, and maintenance. Supported platforms Linear referencing is supported for example by several Geographic Information System software, including: Intergraph GE Global Transmission Office ArcGIS GEOMAP GIS GRASS GIS PostGIS QGIS See also Chainage (also known as station references) in construction surveying Exit number Geocoding Geographic coordinate system Length measurement Milestone Road map Zero mile References Further reading Geographic data and information Construction surveying Coordinate systems Curves Length, distance, or range measuring devices