Abstract: A host system (2) receives uploaded real time bus progress data (20) for bus systems (13). This is determined by the bus system (13) detecting a beacon short range radiation signal from a bus stop systems (11). Uploads are only made if the bus is not running according to the timetable. The host system (2) downloads bus status data (21) for remaining stops (12) on the route. The host system (2) also downloads advertising content to both the bus stop systems (11) and the bus systems (13). This is intelligently processed to select that which is applicable.