Timing point
A timing point, time point or timepoint is a public transit stop that a vehicle tries to reach at a scheduled time.[1] A vehicle is not supposed to pass a timepoint until the schedule time has arrived. These stops are contrasted with all other stops on a scheduled route, for which the transit agency does not explicitly schedule an arrival/departure time. These other stops occur between timepoint stops, so their scheduled times are implicitly between those of the timepoints though not explicitly defined. At minimum, it allows regular passengers to estimate when a bus would get to a stop before or after a timepoint.
The creation of digital schedules, and real-time geo-located apps has somewhat complicated the situation for agencies operating with timepoints. These apps usually ingest General Transit Feed Specification data, a widely used schedule data format, which often included times for every single stop on a route. Agencies may interpolate between their timepoints, but this may not reflect a realistic expectation of when a vehicle should arrive, and the GTFS specification cautions against this practice.[2]
References[]
- ^ Ceder, Avishai (2007). Public Transport Planning and Operation: Theory, Modelling and Practice (1 ed.). p. 88. ISBN 978-0-7506-6166-9.
- ^ "General Transit Feed Specification Reference". Google Developers. Google. Retrieved 6 June 2015.
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