Passenger flow is not the same as loading.
Flow is the amount of passengers boarding and alighting, while
loading is the amount of pax onboard the vehicle.
You can have a service with 95% loading, i.e. 95% full, but very
little flow. An example is 179A, where everyone fills up the bus to
the door (high load), but there is only few exchange(flow) of pax
(unlike feeder services where new pax board, and gets off quickly
along the way)
The passenger flow can only be obtained from the bus co or lta,
this is obtained thru the tap-in and tap-outs of ez-link cards,
unless u are willing to sit in a bus just to record how many pax
board and alight at each stop.
Eh well, you've to adjust to just what pax the bus is mainly
provided for right?
Feeders there would sure be lots of boarding/ alighting
everywhere.