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Authors: Imma Braun, Stefan König, and Eckehard Schnieder
Keywords: Multi Agent System; Rail Transport; Organisation and Operation; Train Control; Train Protection
The macro-logistic structural change of the goods traffic market induced by substitution, goods structure, logistics and integration effects leads to modified requirements on the structures and processes of goods traffic and to increasing losses of market shares of the rail freight transport. A reason for this is a lack of conformity of customer requirements and the services of rail transport. This paper presents a new logistics concept for the railway sector, which increases flexibility in rail freight transport by interlinking organisational and operating processes. Combined with the use of small autonomous transport units, this helps to meet changed market requirements for freight transport. Initial simulation results of an agent based system prototype prove feasibility of the concept and give qualitative results indicating the effects of individual strategies of distinct actors on quality of service and overall system performance.
Paper: trafficforum/05070101 (PDF format, 407 KB) |
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Authors: ShuGuang Li and YanMing Su
Keywords: Advanced Traveler Information Systems; Market Penetration; Compliance Rate; Nested Logit Model
We consider the objective of ATIS is to reduce travelers travel cost uncertainty with recurrent network congestion through provision of traffic information. Most of studies focus on the use of static model for an essentially dynamic problem. We propose a multi-class stochastic dynamic path and departure time model for modeling interactions among travelers in general networks with ATIS. A nested-logit model is used for the determination of the market penetration and compliance rate of ATIS. The upper level is for market penetration; and the lower level for compliance rate. Then an iterative algorithm is presented for the determination of endogenous market penetration and compliance rate of ATIS and the equilibrium network flow patterns. Finally, the model and algorithm are tested in a simple network.
Paper: trafficforum/05012901 (PDF format, 410 KB) |
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