Automatic passenger counters

A system that tracks the number of passengers boarding and alighting at each stop, while also recording the time, location, and direction of travel. It typically uses infrared beams or cameras to count passengers. Stop locations are determined using data from Global Positioning Systems (GPS), signpost emitters, Geographic Information System (GIS) maps, odometer readings, and inertial navigation. The collected data is compiled and processed by an on-board computer or a central system to generate meaningful information.