New PDF release: Advanced Methods in Transportation Analysis

By Yang Chen, Michael Florian (auth.), Professor Dr. Lucio Bianco, Professor Dr. Paolo Toth (eds.)

ISBN-10: 3642852564

ISBN-13: 9783642852565

ISBN-10: 3642852580

ISBN-13: 9783642852589

This quantity is a compendium of papers provided throughout the moment TRlennal Symposium on Transportation research (TRISTAN II) that came about in Capri, Italy on June 23-28, 1994. The Symposium used to be prepared through the Progetto Finalizzato Trasporti and the Istituto di Analisi dei Sistemi ed Informatica of the Italian nationwide examine Council together with the Italian Operations examine Society. the aim of this type of conferences is to periodically let an trade of perspectives and findings by way of scientists within the box of transportation research equipment and instruments. hence, the papers offered handled quite a lot of issues and canopy the various points of transportation research. the fabric contained during this booklet offers specific emphasis to the advance of mathematical modelling and algorithms. This improvement is because of the evolution of electronic desktops and the continual elevate of the computing energy. in reality the necessity of fixing huge scale difficulties (crew scheduling, community site visitors regulate, pollutants tracking and control,. and so on ... ) includes in a few case, millions of variables and for this reason refined mathematical types and computational algorithms.

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Conditions for the existence and uniqueness of the solution based on the theory of variati,onal inequalities are checked. The network coding process and the implementation of the model are described. Results are presented and discussed. The model is found to converge to a stable solution and the solution obtained is close to the observed traffic conditions. 1. Introduction The ultimate objective of the study summarized here and described in detail in [4], is to generate link travel times for a large-scale realworld transportation network for ADVANCE, a dynamic route guidance system described in [6].

Estimating Origin-Destination Matrices from Observed Flows", in Transportation Planning Models (Eds. M. Florian) (1984), 363-380. [34] Nguyen, S. and C. Dupuis, "An Efficient Method for Computing Traffic Equilibria in Networks with Asymmetric Transportation Costs", Transportation Science 18 (1984), 185-232. L, "Existence, Uniqueness and Stability of Traffic Equilibria", Transportation Research B 13 (1979), 295-304. , "An iterative Assignment approach to capacity restraint on arterial networks", HRB, Bulletin 347 (1962).

Also, the code was enhanced to model accurately oneway approaches or exits to/from intersections as well as multi-leg intersections. The golden section subroutine performing the line search step was replaced with the bisection procedure. In this way the computationally-demanding objective function evaluation could be eliminated. Several other modifications improved the usability of the 51 code: (a) reorganizing the program input into a link data file, trip data file and zone file; (b) computation of various statistics; (c) selective saving of the routes generated and (d) saving periodically the status of the computation which can be used to restart the computation from the point where it is terminated.

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Advanced Methods in Transportation Analysis by Yang Chen, Michael Florian (auth.), Professor Dr. Lucio Bianco, Professor Dr. Paolo Toth (eds.)

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