Flag Stop
In public transport, a request stop, flag stop, or whistle stop is a stop or station at which buses or trains, respectively, stop only on request; that is, only if there are passengers or freight to be picked up or dropped off. In this way, stops with low passenger counts can be incorporated into a route without introducing unnecessary delay. Vehicles may also save fuel by continuing through a station when there is no need to stop. There may not always be significant savings on time if there is no one to pick up because vehicles going past a request stop may need to slow down enough to be able to stop if there are passengers waiting. Request stops may also introduce extra travel time variability and increase the need for schedule padding. The appearance of request stops varies greatly. Many are clearly signed, but many others rely on local knowledge. Implementations The methods by which transit vehicles are notified that there are passengers waiting to be picked up at a reque ...
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