Scheduling demand-responsive transportation vehicles using fuzzy-set theory

Journal Article · Fri May 01 00:00:00 EDT 1992 · Journal of Transportation Engineering; (United States)

DOI:https://doi.org/10.1061/(ASCE)0733-947X(1992)118:3(391)· OSTI ID:7020544

Kikuchi, S; Donnelly, R A ^[1]

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1. Civil Engineering Dept., Univ. of Delaware, Newark, DE (United States)

A scheduling algorithm for the time-window-based, many-to-many, dial-a-ride problem is presented in this paper. The algorithm is based on two steps: developing the initial route and inserting leftover trips. These two steps are applied to the scheduling of one vehicle at a time. The paper introduces fuzziness in the values of two basic input parameters, travel time and the desired time of vehicle stop, and applies fuzzy-arithmetic rules and logic to develop the schedules. Since travel time is fuzzy, the possibility of inserting a stop between two existing stops is evaluated by fuzzy grade. Further, the degree that the arrival time of the vehicle satisfies the desired time of the passenger is evaluated by the intersection of two fuzzy sets: arrival time and desired time of vehicle arrival.

• OSTI ID: 7020544
• Journal Information: Journal of Transportation Engineering; (United States), Journal Name: Journal of Transportation Engineering; (United States) Vol. 118:3; ISSN JTPEDI; ISSN 0867-4831
• Country of Publication: United States
• Language: English

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