A Quality Control Framework for Bus Schedule Reliability

Document Type

Journal Article

Publication Date


Subject Area

operations - reliability, infrastructure - vehicle, planning - route design, ridership - commuting, mode - bus


Vehicle locating systems, Schedules, Reliability (Statistics), Quality control, Product inspection, Motor coaches, Data envelopment analysis, Data collection, Data acquisition, Chicago Transit Authority, Buses, Bus routes, AVL, Automatic vehicle location, Automatic location systems


This paper develops and demonstrates a quality control framework for bus schedule reliability. Automatic vehicle location (AVL) devices provide necessary data; data envelopment analysis (DEA) yields a valid summary measure from partial reliability indicators; and panel data analysis provides statistical confidence boundaries for each route-direction's DEA scores. If a route-direction's most recent DEA score is below its lower boundary, it is identified as in need of immediate attention. The framework is applied to 29 weeks of AVL data from 24 Chicago Transit Authority bus routes (and therefore 48 route-directions), thereby demonstrating that it can provide quick and accurate quality control.


Transportation Research Part E Home Page: http://www.sciencedirect.com/science/journal/13665545