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Title	STOCHASTIC APPROXIMATION TO THE EFFECTS OF HEADWAYS ON KNOCK-ON DELAYS OF TRAINS
Accession No	00667812
Authors	Carey, M; Kwiecinski, A
Journal Title	Transportation Research. Part B: Methodological Vol. 28 No. 4
Corp. Authors / Publisher	Pergamon Press plc ; Elsevier
Publication Date	19940800
Description	p. 251-267; Figures(5); References(11); Tables(5)
Languages	English
Abstract	Trains are subject to delays from a variety of causes, and since normally they are not allowed to pass each other on a link, any delay to one train may cause "knock-on" delays to following trains. This is especially true of the high density double and multiple track railways in Britain and Europe. The shorter the scheduled headway between trains, the greater is the expected knock-on delay and hence the greater the expected trip times of following trains. The authors develop simple stochastic approximations to these knock-on train delays. To test and calibrate the approximations, the authors conduct detailed stochastic simulation of the interaction between trains as they traverse sections of the link. The approximate relationships that are derived between scheduled headways and knock-on delays can be used, for example, (a) to provide correction factors for other stochastic or deterministic models of train planning, dispatching, or control; (b) to adjust train timetables, which are currently produced without explicitly considering the expected knock-on effects, and (c) to make it feasible to conduct larger scale simulations of train networks, by reducing or removing the need to simulate behavior within each link.
TRT Terms	Headways ; Multiple track ; Stochastic processes ; Timetables ; Traffic delay ; Train operations
Other Terms	Stochastic process; Train delays
Subject Areas	H93 RAIL TRANSPORTATION
Availability	Pergamon Press, Incorporated Find a library where document is available Order Document: http://worldcat.org/issn/01912615
TRIS Files	HRIS
Database	TRIS Online

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