Blizzard
New Member
This is boardings only data. The APCs are pretty good at distinguishing between boardings and alightings. False activations are possible but rare - the rider must completely cross the threshold of the door. If anything the APCs have a higher chance of missing a rider than double counting them due to boarding characteristics. Large groups of people forcing the doors during peak periods and especially at schools may undercount passengers by as much as 10% because the APCs are unable to distinguish one person from another. This isn't seen as much in alightings as people have to filter from the aisle of the bus through the doors. Another common source of missed passengers is parents with children or strollers, where the child/stroller sticks close to the parents side and the APC sees it as one continuous being thereby counting the parent and child/stroller as one rider.Of course, not every bus has an APC.
Since you say that it is raw data, is that 6.3 million activations? Or is that 6.3 million riders, factoring in each rider is going to activate the APC twice per vehicle (therefore 12.6 million activations)?
Are false activations possible from the very common practice of passengers hanging out at the rear doors? It would be negligible, but there would also be activations everytime drivers enter and leave the bus.
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