TIME-TABLE PLANNING FOR ACCELERATED FREIGHT TRAINS
Abstract
The article describes approaches of designing of a special method of time-table planning for accelerated freight trains.
The author, having analyzed the features of technology of operation of accelerated freight trains, suggests that they are similar to passenger traffic and so it is possible to take for a basis the methods used for planning of passenger traffic time-tables. The proposed method includes the following steps:
1) Identification of the volumes of traffic by destination stations with the help of linear programming. Target function is defined as maximum profit received out-of carriage service with a respect for some restrictive conditions:
• coping with density of freight flows;
• carriage without overload;
• non-negative values of quantity of trains by each destination;
2) Optimization of achieved plan of time-tables using criterion of competitiveness of destinations;
3) Analysis of achieved destinations using criteria of cost and time of delivery by main and alternative routes;
4) Distribution of trains by railways in conformity with capacity, providing for profitability of destinations. The author suggests to use MS Excel Solver add-in to solve problems of linear programming.
As example of planning of accelerated freight trains’ time-table the article contains computation of cargo flows (not general goods) which are currently carried by main motor roads St.Petersburg – Moscow and Moscow – Nizhny Novgorod.
About the Author
M. N. Prokofiev
Moscow State University of Railway Engineering (MIIT), Moscow
Russian Federation
engineer of service section of the center of multimode transport systems
Russian Federation
engineer of service section of the center of multimode transport systems
References
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Review
For citations:
Prokofiev M.N. TIME-TABLE PLANNING FOR ACCELERATED FREIGHT TRAINS. World of Transport and Transportation. 2013;(5):120-124. (In Russ.)
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