MIT1_258JS10_lec15

MIT1_258JS10_lec15 - Dwell Time Models Outline 1 Dwell Time...

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Dwell Time Models Nigel Wilson 1.258J/11.541J/ESD.226J Spring 2010, Lecture 15 1 Outline 1. Dwell Time Theory 2. Bus Dwell Time Model 1 3. Light Rail Dwell Time Model 2 4. Heavy Rail Dwell Time Model 3 1 Milkovits, M.N., “Modeling the Factors Affecting Bus Stop Dwell Time: Use of Automatic Passenger Counting, Automatic Fare Counting, and Automatic Vehicle Location Data." Transportation Research Record: Journal of the Transportation Research Board, pp pp 125-130 (2008). 2 Wilson, N.H.M. and T. Lin, "Dwell-Time Relationships for Light Rail Systems," Transportation Research Record #1361 , 1993, pp. 296-304. 3 Puong, A., "Dwell Time Model and Analysis for the MBTA Red Line." Internal memo, MIT, March 2000.
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Dwell Time Theory Nigel Wilson 1.258J/11.541J/ESD.226J Spring 2010, Lecture 15 2 • Vehicle dwell time affects: system performance service quality • A critical element in vehicle bunching resulting in: high headway variability high passenger waiting times uneven passenger loads • Dwell time impact on performance depends on: stop/station spacing mean dwell as proportion of trip time mean headway operations control procedures EXAMPLES: Commuter rail ---> little impact of dwell time on performance Long, high-frequency bus route ---> major impact
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Dwell Time Theory Nigel Wilson 1.258J/11.541J/ESD.226J Spring 2010, Lecture 15 3 • Dwell time depends on many factors: Human, modal, operating policies & practices, mobility, weather, etc. • For a given system we have the following possible models: 1. Single door, no congestion and interference: DOT = a + b(DONS) + c(DOFFS) 2. Single door with congestion and interference: DOT = a + b(DONS) + c(DOFFS) + d(DONS+DOFFS)(DTD)
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Dwell Time Theory (cont'd) Nigel Wilson 1.258J/11.541J/ESD.226J Spring 2010, Lecture 15 4 • For a given system we have the following possible models . .. 3. Single car with m doors:
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This note was uploaded on 12/06/2011 for the course ESD 11.380j taught by Professor Fredsalvucci during the Fall '02 term at MIT.

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MIT1_258JS10_lec15 - Dwell Time Models Outline 1 Dwell Time...

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