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Operations Research, Systems Engineering and Industrial Engineering Commons

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Series

Civil and Environmental Engineering

1991

Articles 1 - 3 of 3

Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering

From Suburban Railways To Regional Rail Systems, Vukan R. Vuchic Apr 1991

From Suburban Railways To Regional Rail Systems, Vukan R. Vuchic

Departmental Papers (ESE)

In recent decades rail systems serving cities and their suburbs have undergone a major expansion and evolution. As one of the oldest modes of mechanized urban transportation, suburban or commuter railways were specialized services for commuters operated by railway companies which primarily operated long-distance passenger and freight transport. Today most of these railways have grown into regional rail systems - regular transit services which meet the need for high quality multicentered transportation throughout growing metropolitan areas.


Prospects For Competitiveness Of Urban Public Transport, Vukan R. Vuchic Feb 1991

Prospects For Competitiveness Of Urban Public Transport, Vukan R. Vuchic

Departmental Papers (ESE)

From the introductory paragraphs:


"If we observe a herd of sheep who want to pass through a gate to a green pasture, we see them pushing so hard that they get stuck at the gate and pass through it only very torturously and with great delay. It is obvious that if they would not push, but pass one or two at a time, the sheep would get through the gate much faster and more easily. The problem is, we conclude, that the sheep are animals with a rather low level of intelligence. If a creature from Outer Space observes one ...


Theory And Practice Of Metro Network Design, Vukan R. Vuchic, Antonio Musso Jan 1991

Theory And Practice Of Metro Network Design, Vukan R. Vuchic, Antonio Musso

Departmental Papers (ESE)

Most transit networks are designed empirically. For bus net­works this process 1s often satisfactory because bus routes and networks are very dependent on local conditions, and they can be easily modified, allowing easy corrections of problems which line design may cause in operations. However, with transit systems which have extensive infrastructure, most typically metro lines and networks, corrections are ex­tremely difficult to make. Develop­ment of an optimal network and avoidance of design features which result in operational pro­blems are therefore of great im­portance. Yet, the experiences from the design and operation of such large older ...