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Articles 121 - 138 of 138

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

Remarks At "R & D Priorities: Proceedings Of The Second Umta/Apta Research And Development Priorities Conference," November 30 - December 1, 1976, Vukan R. Vuchic Jan 1976

Remarks At "R & D Priorities: Proceedings Of The Second Umta/Apta Research And Development Priorities Conference," November 30 - December 1, 1976, Vukan R. Vuchic

Departmental Papers (ESE)

No abstract provided.


Evaluating Umta’S Work, Vukan R. Vuchic Jan 1976

Evaluating Umta’S Work, Vukan R. Vuchic

Departmental Papers (ESE)

The period of economic expansion and affluence since World War II created a strong tendency to base planning on unquestioned extrapolation of past trends. This method is acceptable in areas where the developmental trends are in desirable directions. But when this is not the case, this method does not represent rational planning, since its effect is to continue and encourage undesirable developments.

Urban transportation has suffered greatly from this type of planning; many of our national and metropolitan area transportation studies placed a heavy reliance on .con­tinuation of growth in auto ownership, VMT's, decentralization, etc. They failed to ...


Schnellbahn Automation Und “Der Letzte Mann” Am Zug, Vukan R. Vuchic Mar 1975

Schnellbahn Automation Und “Der Letzte Mann” Am Zug, Vukan R. Vuchic

Departmental Papers (ESE)

No abstract provided.


New Transit Technologies: An Objective Analysis Is Overdue, Vukan R. Vuchic, Richard M. Stanger Oct 1974

New Transit Technologies: An Objective Analysis Is Overdue, Vukan R. Vuchic, Richard M. Stanger

Departmental Papers (ESE)

New urban transit systems incorporating inefficient and obsolete technical features are being promoted, discussed and funded. Typically they involve automatic operation with rubber tyre guidance; rail systems which are clearly superior are concurrently ignored. Dr. Vukan R. Vuchic of the University of Pennsylvania and Richard M. Stanger of the Metropolitan Atlanta Rapid Transit Authority* urge transit planners, operators and equipment manufacturers to exploit the great potential of rail technology rather than pursuing innovation for its own sake.


National Transportation Policy ‑- The Basic Prerequisite For Progress, Vukan R. Vuchic Mar 1974

National Transportation Policy ‑- The Basic Prerequisite For Progress, Vukan R. Vuchic

Departmental Papers (ESE)

A statement presented by Vukan Vuchic at the House Transportation Appropriations Subcommittee Hearing in the U.S. House of Representatives in March 1974.


Integration Of Transit Systems Summary, R. Krzyczkowski, Vukan R. Vuchic, R. Remak, S. Henneman Oct 1973

Integration Of Transit Systems Summary, R. Krzyczkowski, Vukan R. Vuchic, R. Remak, S. Henneman

Departmental Papers (ESE)

The objective of this report is to assess the potential for interagency and intermodal integration of transit systems in U.S. urban areas, drawing on an analysis of the successful experience of European systems. Vol. l documents the need for transit integration in U.S. urban areas, presents the conceptual and evaluative frame-work, and reviews current transit integration efforts by Federal, state, and local governments. Vol. 2 describes in detail four major European transit systems (London, Hamburg, Paris, and Munich); gives brief descriptions of six others (Newcastle upon Tyne, Edinburgh, Stockholm, Gothenburg, Copenhagen, and Oslo); and summarizes and appraises the ...


Rapid Transit Automation And The Last Crew Member, Vukan R. Vuchic Oct 1973

Rapid Transit Automation And The Last Crew Member, Vukan R. Vuchic

Departmental Papers (ESE)

Rapid transit systems in many cities are being automated, but most transit officials reject the idea of operation without crews on the train as idealistic. At the same time large resources are spent on development of full automation for numerous new systems such as PRT, many of which have no defined role in urban transportation programmed train movement eliminates any possible improper driving practices. However, nearly all rapid transit vehicles have indirect controls which prevent the driver from improper acceleration and assist him in braking. Thus improvement through A TO is again not significant.


Integration Of Transit System, R. Krzyczkowski, Vukan R. Vuchic, R. Remak, S. Henneman Jun 1973

Integration Of Transit System, R. Krzyczkowski, Vukan R. Vuchic, R. Remak, S. Henneman

Departmental Papers (ESE)

The objective of this report is to assess the potential for interagency and intermodal integration of transit systems in u.s. urban areas, drawing on an analysis of the successful experience of European systems. Vol. 1 documents the need for transit integration in U.S. urban areas, presents the conceptual and evaluative frame­work, and reviews current transit integration efforts by Federal, state, and local governments. Vol. 2 describes in detail four major European transit systems (London, Hamburg, Paris, and Munich); give brief descriptions of six others (Newcastle upon Tyne, Edinburgh, Stockholm, Gothenburg, Copenhagen, and Oslo); and summarizes and appraises ...


Skip-Stop Operation As A Method For Transit Speed Increase, Vukan R. Vuchic Apr 1973

Skip-Stop Operation As A Method For Transit Speed Increase, Vukan R. Vuchic

Departmental Papers (ESE)

Increase of transit speeds is one of the most effective ways of increasing the attractiveness of transit for urban travel. While surface transit in particular suffers from low speed, the desirabil­ity of higher speeds is not limited to it. Rapid transit has adequate speed for short to medium-distance trips in urban areas. However, for longer trips, particularly when there is a competing freeway facility, the requirement for speed is rather high. Since many station spacings are adopted on the basis of area coverage, high operating speed of the trains often cannot be achieved. Thus, typical lines of urban rapid ...


Light Rail Transit Systems: A Definition And Evaluation, Vukan R. Vuchic Oct 1972

Light Rail Transit Systems: A Definition And Evaluation, Vukan R. Vuchic

Departmental Papers (ESE)

Rail transit represents a family of modes ranging from light rail to regional rapid transit systems and it can be utilized in a number of different cities and types of applications.

Many European cities of medium size employ very successfully light rail mode for gradual upgrading of transit service into partially or fully separated high speed, reliable transit systems. Analysis of these cities show that with population densities and auto ownership very similar to those in the United States cities, their transit systems offer a superior service and have much better usage than our cities.

Many modern features of light ...


Transit Federation -- A Solution For Service Integration, Wolfgang S. Homburger, Vukan R. Vuchic Jan 1972

Transit Federation -- A Solution For Service Integration, Wolfgang S. Homburger, Vukan R. Vuchic

Departmental Papers (ESE)

Inadequate organization of public transport services in urban areas, particularly in the large ones, is one of the major reasons for the unsatisfactory level of service and economic problems of the operating companies. Despite the current trend toward mergers of transit operators into large public agencies, the services in most cities remain fragmented in various degrees; integration is often not in sight due to organizational problems which appear insurmountable. Losses to the users, the operators, and the city from this situation are often very significant.

This article briefly analyzes the reasons for this situation, explores its consequences and their impor ...


Value Of Speed In Public Transit Services, Vukan R. Vuchic, G Bruce Douglas Iii, Bondada V.A Murthy Nov 1970

Value Of Speed In Public Transit Services, Vukan R. Vuchic, G Bruce Douglas Iii, Bondada V.A Murthy

Departmental Papers (ESE)

High speed is always a desirable feature of public transportation services. Any measure that increases public transport speeds results in benefits to users in tenns of saved travel time, and benefits to the operator in reduced operating costs and in eventual reduction of fleet size.

At the same time, it is known that some major efforts for increasing speeds, often involving considerable cost (such as increasing maximum technical speed of vehicles) result in relatively small increases in average passenger travel speed. This problem is common for a number of different modes of transportation. An excellent example can be found in ...


Federation Of Transit Agencies As A Solution For Service Integration, Wolfgang S. Homburger, Vukan R. Vuchic Jul 1970

Federation Of Transit Agencies As A Solution For Service Integration, Wolfgang S. Homburger, Vukan R. Vuchic

Departmental Papers (ESE)

Inadequate organization of public transport services in urban areas, particularly in the large ones, is one of the major reasons for the unsatisfactory level of service and economic problems of the operating companies. Despite the current trend toward mergers of transit operators into large public agencies, the services in most cities remain fragmented in various degrees; integration is often not in sight due to organizational problems which appear insurmountable. Losses to the users, various degrees; integration is often not in sight due to organization.

This article briefly analyzes the reasons for this situation, ex­plores its consequences and their importance ...


Minicar Transit System Final Report, Vukan R. Vuchic, Donald Bergmann, G. Bruce Douglas Iii, Bondada V.A Murthy Jan 1970

Minicar Transit System Final Report, Vukan R. Vuchic, Donald Bergmann, G. Bruce Douglas Iii, Bondada V.A Murthy

Departmental Papers (ESE)

No abstract provided.


A Critique Of The Delaware Valley Regional Planning Commission 1985 Regional Transportation Plan, David E. Boyce, Vukan R. Vuchic Oct 1969

A Critique Of The Delaware Valley Regional Planning Commission 1985 Regional Transportation Plan, David E. Boyce, Vukan R. Vuchic

Departmental Papers (ESE)

The 1985 Regional Transportation Plan of the Delaware Valley Regional Planning Commission (Plan Report No. 5) is one of the most detailed and informative reports published to date by a transportation planning agency. The Report reflects several advances in urban transportation planning procedures made by DVRPC. Nevertheless, the Report does contain a number of very serious deficiencies.

In an attempt to make a constructive contribution to transportation planning in the Delaware Valley Region, the authors of this Critique analyze these deficiencies and propose general and specific improvements for the Transportation Plan.


Fahrplanstörungen ‑ Zusätzliche Faktoren, Betriebliche Maßnahmen | Schedule Irregularities – Additional Factors And Operational Measures, Vukan R. Vuchic Apr 1969

Fahrplanstörungen ‑ Zusätzliche Faktoren, Betriebliche Maßnahmen | Schedule Irregularities – Additional Factors And Operational Measures, Vukan R. Vuchic

Departmental Papers (ESE)

No abstract provided.


The Role Of Public Transportation In Hamburg, Germany, Vukan R. Vuchic Jan 1964

The Role Of Public Transportation In Hamburg, Germany, Vukan R. Vuchic

Departmental Papers (ESE)

Hamburg is making serious efforts to solve the transporta­tion problem, common to most European cities-how to provide facilities to meet the rapidly increasing requirements of modem transportation and, at the same time, preserve the city's values by maintaining historic and other buildings, structures, and, particularly in the central area, its character. Being a large and relatively rich city with progressive ideas, Hamburg has accom­plished some remarkable achievements in this field. The purpose of this article is to delineate some of those achievements, particularly in public transportation.


Test Of High-Speed Engine, William Frazier Owen Jan 1899

Test Of High-Speed Engine, William Frazier Owen

Student and Lippitt Prize essays

Discusses the best ways in which a steam engine can function by using measurements from an actual steam engine. The essay ultimately determines that a steam engine is at its highest efficiency when carrying the largest load possible.