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Development of a Driving Schedule to Mimic Transit Bus Behavior in Mexico City
Technical Paper
2006-01-3394
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
It is difficult to project the emissions performance of a vehicle on a route unless the test cycle used to gain the emissions data reasonably represents that route. A chassis dynamometer emissions measurement test schedule consisting of three modes (congested, non-congested and bus rapid transit (BRT) operation) was developed for use in a program to evaluate transit bus technologies in Mexico City. Existing buses were fitted with global positioning system (GPS) data loggers and, between September 2nd and 8th of 2004, 54 hours of speed-time data were collected while the buses were operated over several bus routes in Mexico City. The data set was then broken down into individual micro-trips, each consisting of an idle period followed by the bus traveling some distance, followed by a final deceleration to idle. An initial attempt to categorize each micro-trip according to time-of-day and thus determine whether the micro-trip occurred during defined rush-hour and non-rush-hour periods was unsuccessful due a lack of correlation between congested conditions in Mexico City and time-of-day (i.e. there is no clearly defined and spatially extensive rush-hour). Hence, the researchers defined two operational modes, namely “congested” and “non-congested”, with the distinction that the congested mode would contain micro-trips with average speeds falling in the lower 75th percentile while the non-congested mode would contain micro-trips falling in the upper 75th percentile. As a result, two modes would have different average speeds, and permit projection of emissions over links with a variety of average speeds. With these definitions, and a reasonable mode length of 1000 seconds, an iterative computer process randomly combined the individual micro-trips from each mode to form forty driving schedules. Each schedule was then compared to the characteristics of the entire respective (congested, non-congested) data set and the schedule which matched the characteristics of each mode most accurately was selected.
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Authors
- David L. McKain - Center for Alternative Fuels, Engines and Emissions, Mechanical and Aerospace Engineering, West Virginia University
- Richard J. Atkinson - Center for Alternative Fuels, Engines and Emissions, Mechanical and Aerospace Engineering, West Virginia University
- Nigel Clark - Center for Alternative Fuels, Engines and Emissions, Mechanical and Aerospace Engineering, West Virginia University
- Victor H. Mucino - Center for Alternative Fuels, Engines and Emissions, Mechanical and Aerospace Engineering, West Virginia University
- J Víctor Hugo Páramo Figueroa - Mexico City Secreriat of the Environment
- Sergio Zirath Hernández Villaseñor - Mexico City Secreriat of the Environment
- Cesar Fausto Gálvez Hernández - Mexico City Secreriat of the Environment
- Enrique Rivero Borrel - Mexico City Secreriat of the Environment
- Rodrigo Perrusquía Máximo - Mexico City Secreriat of the Environment
- Daniel León Cervantes - Mexico City Secreriat of the Environment
Citation
McKain, D., Atkinson, R., Clark, N., Mucino, V. et al., "Development of a Driving Schedule to Mimic Transit Bus Behavior in Mexico City," SAE Technical Paper 2006-01-3394, 2006, https://doi.org/10.4271/2006-01-3394.Also In
References
- Clark, N.N. Borrell, E.R. McKain, D.L. Paramo, V.H. Wayne, W.S. Vergara, W. Barnett, R. Gautam, M. Thompson, G. Lyons, D.W. Shipper, L. “Evaluation of Emissions from New and In-Use Transit Buses in Mexico City” Poster Presentations, 85 th Transportation Research Board Annual Meeting January 2006
- US Code of Federal Regulations 40 2004
- Melendez, M. Taylor, J. Zuboy, J. Wayne, W.S. Smith, D. “Emission Testing of Washington Metropolitan Area Transit Authority (WMATA) Natural Gas and Diesel Transit Buses” Technical Report NREL/TP-540-36355 December 2005
- Nine, R.D. Clark, N.N. Daley, J.J. Atkinson, C.M. “Development of a heavy-duty chassis dynamometer driving route” Proc. Inst. Mech. Engrs. Part D., Jour. of Automobile Eng. 213 561 574
- O'Keefe, M. Hendricks, T. Zou, Z. Davis, S. Beaty, K. Weissner, S. Sharma, V.K. “A New Composite Drive Cycle for the Evaluation and Test of Heavy Duty Hybrid Electric Class 4-6 Urban Delivery Vehicles” 2003 International Truck and Bus Meeting and Exhibition Fort Worth, Texas November 12th 2003 SAE Paper 2004-01-1052
- Clark, N.N. Borrell, E.R. McKain, D.L. Paramo, V.H. Wayne, W.S. Vergara, W. Barnett, R. Gautam, M. Thompson, G. Lyons, D.W. Shipper, L. “Evaluation of Emissions from New and In-Use Transit Buses in Mexico City” Journal of the Transportation Research Board 2006