scholarly journals Better for Everyone: An Approach to Multimodal Network Design Considering Equity

2016 ◽  
Vol 19 ◽  
pp. 303-315 ◽  
Author(s):  
Rosalia Camporeale ◽  
Leonardo Caggiani ◽  
Achille Fonzone ◽  
Michele Ottomanelli
Author(s):  
Carlos Felipe G. Loureiro ◽  
Bruce Ralston

A Multicommodity Multimodal Network Design (MCMND) model is presented; the model is to be used as a planning tool for determining investment priorities for freight intercity networks. The MCMND model is designed to select the best set of investment options for a multimodal regional network, given a limited investment budget. The main component of the model comprises the solution of a nonlinear bilevel network design problem formulated to choose investments that minimize both the transportation costs incurred by users and the environmental impacts of less efficient modes of transportation. Investment options to be considered by the model involve the addition of new physical links to the network, the improvement of existing links, and the location of intermodal transfer facilities at specified nodes of the network. The representation of the multimodal network is at a level of detail appropriate for strategic planning for a large region. The demand for transportation services is fixed and exogenous to the model. Mode choice in shipping freight is modeled in combination with flow assignment, assuming that goods are shipped at minimum total generalized costs. A new path-based stochastic user equilibrium assignment algorithm is proposed to distribute trips over the multimodal network according to a logit-type model. The Tietê-Paraná Valley in Brazil was selected for the development of a pilot application of the MCMND model to assess its efficiency when dealing with large networks. This application also served to emphasize the importance of an interface between the MCMND model and a geographic information system in solving real-life problems.


Author(s):  
Xiaoyun Bing ◽  
Jim J. Groot ◽  
Jacqueline M. Bloemhof‐Ruwaard ◽  
Jack G.A.J. van der Vorst

1977 ◽  
Vol 5 (1) ◽  
pp. 6-28 ◽  
Author(s):  
A. L. Browne

Abstract An analytical tool is presented for the prediction of the effects of changes in tread pattern design on thick film wet traction performance. Results are reported for studies in which the analysis, implemented on a digital computer, was used to determine the effect of different tread geometry features, among these being the number, width, and lateral spacing of longitudinal grooves and the angle of zigzags in longitudinal grooves, on thick film wet traction. These results are shown to be in good agreement with experimental data appearing in the literature and are used to formulate guidelines for tread groove network design practice.


2021 ◽  
Author(s):  
Stewart J. Reid ◽  
Ruben E. Perez ◽  
Peter W. Jansen ◽  
Cees Bil

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