منابع مشابه
Perspectives on Freight Movement by Road and Rail in South Africa
For a developing country, South Africa has a relatively extensive road and rail network. The approximately 264 000 km of roads and 20 000 km of rail network (30 600 km of tracks) have largely been built and paid for by previous generations and represent assets of enormous value for Southern Africa. The optimum use, management, maintenance and expansion of these networks are crucial for economic...
متن کاملScheduling Freight Trains in Rail-Rail Transshipment Yards
Transshipment yards, where gantry cranes allow for an e cient transshipment of containers between di erent freight trains, are important entities in modern railway systems and facilitate the general shift from point-to-point transport to hub-and-spoke railway systems. Modern rail-rail transshipment yards accelerate container handling, so that multiple smaller trains with equal destination can b...
متن کاملMicro-Simulation Model for Modeling Freight Agents Interactions in Urban Freight Movement
This paper proposes a micro-simulation model for urban freight movement, in which the behavior of freight agents and their relationship in supply chains are incorporated. The proposed model is a modification of the traditional four-step approach in that it considers the behavior of each freight agent individually. This paper covers three of the four steps of the traditional approach, including ...
متن کاملRAIL FREIGHT TRANSPORT IN A PAN-EUROPEAN CONTEXT by
The views expressed in this paper are those of the author and do not represent the views of ECMT or those of its Member countries.
متن کاملSingle-Car Routing in Rail Freight Transport
Cars in rail freight service follow prescribed routes from their origin via intermediate shunting yards to their destination. The goal in designing such routes is to reduce the number of trains and their travel distances. Various real-world hard constraints make the problem difficult to formulate and also to solve. We present integer programming formulations for this car routing problem arising...
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ژورنال
عنوان ژورنال: Journal of Transport Literature
سال: 2013
ISSN: 2238-1031
DOI: 10.1590/s2238-10312013000300005