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ESTIMATION OF ORIGIN-DESTINATION DEMAND FOR DYNAMIC ASSIGNMENT WITH SIMULTANEOUS ROUTE AND DEPARTURE TIME CHOICE.
| 题名： | ESTIMATION OF ORIGIN-DESTINATION DEMAND FOR DYNAMIC ASSIGNMENT WITH SIMULTANEOUS ROUTE AND DEPARTURE TIME CHOICE. |
| 作者： | Van-der-Zijpp-NJ; Lindveld-CDR |
| 关键词： | Departure-time; Dynamic-traffic-assignment; Estimating-; Matrices-Mathematics; Origin-and-destination; Route-choice; Travel-demand |
| 摘要： | As congestion results not only in the dispersion of origin-destination (O-D) demand across multiple routes but also in peak spreading, use of dynamic traffic assignment models as a means of predicting the impact of a new infrastructure should take into account departure time choice in addition to route choice. Departure time choice may be modeled simultaneously with route choice. In such a model, each traveler has a preferred departure and arrival time, deviation from which results in a certain disutility. Departure time choice can be viewed as route choice in a suitably defined hypernetwork. The combination of departure time choice and route choice in a single framework is called the dynamic user optimum departure time and route choice (DUO-D&R) assignment. When the DUO assignment needs a dynamic O-D matrix with fixed departure times, the DUO-D&R assignment needs a dynamic O-D matrix with preferred departure times. This matrix is called the preferred departure time O-D (pOD) matrix. A method is proposed for estimating the pOD demand matrix that reflects preferred instead of realized departure times. To carry out this estimation, the DUO-D&R problem is formulated and solved. The schedule delay function and the departure choice model are assumed to be known. The possible advantage of the DUO-D&R assignment over DUO assignment is demonstrated through numerical experiments that correspond to scenarios in which infrastructure is expanded and travel demand is subject to uniform growth. |
| 总页数： | Transportation Research Record. 2001. (1771) pp75-82 (8 Fig., 14 Ref.) |
| 报告类型： | 科技报告 |
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