Every other part of the operation already runs on real time. Service still runs on a calendar.
A calendar is a guess about where the work will be, and the guess is wrong in two directions at once. Some points get serviced that were already fine. Others sit empty or full for hours before the round comes through.
A schedule cannot be right, because the conditions it is guessing about keep changing after it is written.
Most of the operation already left this behind. Inventory, logistics, staffing, and maintenance moved years ago from fixed schedules to real-time signal. Fixed-path service is the last place a calendar still drives the work.
That is not a stable position. Once an operation can see what actually needs service, running a route on a guess stops making sense. On-demand service is the shift to running on the signal instead.




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