Operational Feasibility of Timed Transfer in Transit Systems
Publication: Journal of Transportation Engineering
Volume 113, Issue 2
Abstract
The concept of timed transfer, a scheduling procedure used in transit systems, is explained and examined. In particular, the feasibility of this procedure is evaluated using a simple two‐route case to determine the conditions under which timed transfer provides improved service levels compared to unscheduled transferring. A computer program is developed, which simulates four transfer strategies: (1) unscheduled transfers; (2) scheduled transfers without vehicle waiting; (3) scheduled transfers where the lower frequency bus is held until the higher frequency vehicle arrives; and (4) scheduled transfers when both buses are held until a transfer event occurs. The factors affecting timed transfers are evaluated based on an analysis of simulation results and the development of regression models. Preferred strategies for different route conditions are subsequently described.
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References
1.
Abkowitz, M., and Engelstein, I. (1983). “Factors affecting running time on transit routes.” Transp. Res., 17A(2), 107–113.
2.
Charles River Associates, Inc. (1981). Use and consequences of timed transfers on U.S. transit properties. Boston, Mass.
3.
Schaeffer, K. H. (1976). “Timed transfer focal point service.” Report No. SS‐232‐U.3‐116, U.S. Dept. of Transportation, TSC, Cambridge, Mass.
4.
Systan, Inc. (1983). “Timed transfer: An evaluation of its structure, performance and cost.” Report No. UMTA‐MA‐06‐0049‐83‐6, Urban Mass Transportation Administration, Washington, D.C.
5.
Vuchic, V. R. (1982). Timed transfer system planning, design, and operation. Department of Civil and Urban Engineering, Univ. of Pennsylvania, Philadelphia, Pa.
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Copyright © 1987 ASCE.
History
Published online: Mar 1, 1987
Published in print: Mar 1987
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