The GNSS Metering Association for Road User Charging
The GNSS Metering Association for Road User Charging (GMAR) was established to create the GMAR Performance Analysis Framework (GPAF) to quantifiably address performance issues related to road-use metering. Experts from Britain, Canada, Belgium, France, Germany, Netherlands, Spain, and Sweden have drafted a body of criteria, characterizations, tests and analyses specific to Charging Reliability. The measurement criteria are related only to charging data as opposed to distance or other accuracy metrics. Hence, GPAF analysis is independent of on-board technology, algorithms, processing or interconnection to vehicular systems.
As of 2010, the core standardization effort of GMAR has been taken over by CEN/TC278 and is under consideration as part of a new work item for an International Technical Standard (TS) related to Charging Performance, encompassing GNSS and DSRC, and potentially others. This page will remain a resource and GMAR will continue to explore ways to promote Charging Performance excellence in the GNSS tolling industry. GMAR is independent of CEN (and ISO).