an activity consisting in the assignment, at a certain time, of operational data to a monitored LOGICAL VEHICLE (e.g. that the vehicle is operating a certain MONITORED VEHICLE JOURNEY, or has passed at a certain OBSERVED PASSING TIME at a POINT).

In SIRI, the information reported by the SIRI Vehicle Monitoring Service may include both the vehicle’s location, i.e. geospatial position, and other operational data such as the number of passengers, and whether it is in congestion.