- Email: [email protected]
Special feature
Bibliography
and non-work trips. Architectural impacts are identified in Zehren’s casebook study of the intrusion of PRT on a variety of urban settings. while the more technical papers contain several fine software oriented studies on vehicle management, station configurations and vehicle headway control. The editor’s enthusiastic overview and the chapters on government programs and systems presenta-
321
tions are especially recommended for those new to PRT. In all, despite the short play given to the more pressing problems facing PRT. the book does provide a solid introduction to the technology and stimulates thought on the subject. [Editor’s note: The 1975Conference on PRT was held in Denver? Colorado, 17-19 September.]
Brief Notices Report of the Social Problems and Transportation Workshop. Los Angeles, California. Social Analysis Group,
Environmental Analysis Section. Division of Transportation Planning, California Department of Transportation. Available from Environmental Analysis Section, Division of Transportation Planning. CALTRANS, PO Box 214177. Sacramento. CA 95821. U.S.A. Jan. 1974. pp. 42. Price: Free. Report of meeting of representatives of low-mobility social groups and representatives of governmental transportation planning agencies. Discussion of how the needs of low-mobility social groups had been largely unmet in the transportation development of California and how these needs should be made known and dealt with in the future.
Ocean transportation. Ernst G. Frankel and Henry S.
Marcus. The MIT Press, 28 Carleton Street. Cambridge. MA 02142. U.S.A. 1973. pp. 822. Price: $25.00. Analysis of the development and status of ocean transportation, including projections of future trends. Table of Contents: I. Demand and supply of Shipping: A World Review: II. Ocean Transportation Technology: III. Developing and Using Data on Trade Commodity Flows: IV. Shipbuilding Costs; V. Ocean Barging, A Review: VI. A Review of Maritime Labor and a Study of the Longshore Industry; VII. Financing of U.S. Shipping: VIII. Factors Affecting Shipping Operations; IX. A Review of Merchant Marine Subsidies with an Analysis of Planning Subsidized Liner Replacement.
Special Feature
In line with our policy of drawing the readers’ attention to particular sources of research reports and special publications, we will devote space over the next several issues to work at German universities. In contrast to the North American experience. transportation research in Germany tends to be focussed around individual, eminent professors who hold a chair and operate a research institute at a university. The lnstitut fuer Verkehrswesen (Institute for Traffic Science) at the University of Karlsruhe, under the leadership of W. Leutzbach, is one of these research centers. Organized in 1%3, this institute publishes a continuous series of research reports and monographs. These publications. which are apparently readily available from the institute. deal mostly with traffic flow. Notice of two of their most recent reports is given below. Simulation des Strasse.nverkebrs&.ses (Simulation of Road Traffic Flow.) Rainer Wiedemann, Vol. 8, Institut fuer Verkehrswesen. University of Karlsruhe. Karlsruhe, German Federal Republic. 1974. Paper. 126~~. (in German) Presents a stochastic simulation model of traffic flow, and shows results for sample cases. The computer program is in ALGOL.
Sensitivitaetsanalgse
eines
Verkehrsplanungsmodells
(Sensitivity Analysis of a Transportation Planning Model.) Wolf Thomas. Vol. 10, Institut fuer Verkehrswesen. University of Karlsruhe. Karlsruhe, German Federal Republic. 1974. Paper, 152~~. (in German) Working within the general context of the standard urban transportation planning paradigm (trip generation, distribution, model split, etc.) this report attempts to determine the level of accuracy that is feasible. Although the standard planning model is growing steadily in disrepute in North America (because of its implicit presumption that the number and direction of trips is independent of the kind of transport service offered), the kind of work presented in this report would seem to be most important. In view of the potentially large variations in traffic patterns. it is vital for planners to recognize this uncertainty and to deal with it emplicitly in the formulation of developmental strategies. To my knowledge. this work is unique and its concepts deserve careful attention. RICHARD DE NEUFVILLE
and non-work trips. Architectural impacts are identified in Zehren’s casebook study of the intrusion of PRT on a variety of urban settings. while the more technical papers contain several fine software oriented studies on vehicle management, station configurations and vehicle headway control. The editor’s enthusiastic overview and the chapters on government programs and systems presenta-
321
tions are especially recommended for those new to PRT. In all, despite the short play given to the more pressing problems facing PRT. the book does provide a solid introduction to the technology and stimulates thought on the subject. [Editor’s note: The 1975Conference on PRT was held in Denver? Colorado, 17-19 September.]
Brief Notices Report of the Social Problems and Transportation Workshop. Los Angeles, California. Social Analysis Group,
Environmental Analysis Section. Division of Transportation Planning, California Department of Transportation. Available from Environmental Analysis Section, Division of Transportation Planning. CALTRANS, PO Box 214177. Sacramento. CA 95821. U.S.A. Jan. 1974. pp. 42. Price: Free. Report of meeting of representatives of low-mobility social groups and representatives of governmental transportation planning agencies. Discussion of how the needs of low-mobility social groups had been largely unmet in the transportation development of California and how these needs should be made known and dealt with in the future.
Ocean transportation. Ernst G. Frankel and Henry S.
Marcus. The MIT Press, 28 Carleton Street. Cambridge. MA 02142. U.S.A. 1973. pp. 822. Price: $25.00. Analysis of the development and status of ocean transportation, including projections of future trends. Table of Contents: I. Demand and supply of Shipping: A World Review: II. Ocean Transportation Technology: III. Developing and Using Data on Trade Commodity Flows: IV. Shipbuilding Costs; V. Ocean Barging, A Review: VI. A Review of Maritime Labor and a Study of the Longshore Industry; VII. Financing of U.S. Shipping: VIII. Factors Affecting Shipping Operations; IX. A Review of Merchant Marine Subsidies with an Analysis of Planning Subsidized Liner Replacement.
Special Feature
In line with our policy of drawing the readers’ attention to particular sources of research reports and special publications, we will devote space over the next several issues to work at German universities. In contrast to the North American experience. transportation research in Germany tends to be focussed around individual, eminent professors who hold a chair and operate a research institute at a university. The lnstitut fuer Verkehrswesen (Institute for Traffic Science) at the University of Karlsruhe, under the leadership of W. Leutzbach, is one of these research centers. Organized in 1%3, this institute publishes a continuous series of research reports and monographs. These publications. which are apparently readily available from the institute. deal mostly with traffic flow. Notice of two of their most recent reports is given below. Simulation des Strasse.nverkebrs&.ses (Simulation of Road Traffic Flow.) Rainer Wiedemann, Vol. 8, Institut fuer Verkehrswesen. University of Karlsruhe. Karlsruhe, German Federal Republic. 1974. Paper. 126~~. (in German) Presents a stochastic simulation model of traffic flow, and shows results for sample cases. The computer program is in ALGOL.
Sensitivitaetsanalgse
eines
Verkehrsplanungsmodells
(Sensitivity Analysis of a Transportation Planning Model.) Wolf Thomas. Vol. 10, Institut fuer Verkehrswesen. University of Karlsruhe. Karlsruhe, German Federal Republic. 1974. Paper, 152~~. (in German) Working within the general context of the standard urban transportation planning paradigm (trip generation, distribution, model split, etc.) this report attempts to determine the level of accuracy that is feasible. Although the standard planning model is growing steadily in disrepute in North America (because of its implicit presumption that the number and direction of trips is independent of the kind of transport service offered), the kind of work presented in this report would seem to be most important. In view of the potentially large variations in traffic patterns. it is vital for planners to recognize this uncertainty and to deal with it emplicitly in the formulation of developmental strategies. To my knowledge. this work is unique and its concepts deserve careful attention. RICHARD DE NEUFVILLE