Flight frequency is an important determinant of air-travel demand, but must be sustained by adequate demand, implying a feedback effect. Frequencies of link-sharing routes are related, implying a peer effect. The paper examines the effects, using a model of airline network where flight frequency is endogenized with passenger flow. An estimation strategy is proposed to help correct the possible ...

It is a truism that the transportation system is a critical component of every urban economy, and that transportation policy decisions can have a profound effect on the development of the urban system. Public transportation projects are often massive and mutually exclusive, with irreversible cumulative effects over long periods. If major social losses are to be avoided, careful planning based o...

is one of ten regional units mandated by Congress and established in Fall 1988 to support research, education, and training in surface transportation. The UC Center serves federal Region 1X and is supported by matching grants from tile U. Angeles: and several academic departments at the Berkeley, Davis, lrvine, and Los Angeles campuses. Faculty and students on other University of California cam...

Activity-based approach A modeling method that ac17 counts for the interdependent relationships among ac18 tivities and persons to derive travel demand equations. 19 Dynamic planning The incorporation of trends, cycles, 20 and feedback mechanisms into a process of actively 21 shaping our future. Desired futures are first defined in 22 terms of performance measures and a combination of 23 foreca...

As demand increases, airline carriers often increase flight frequencies to meet the larger flow of passengers in their networks, which reduces passengers’ schedule delays and attracts more demand. Focusing on the “network effects”, this paper develops and estimates a structural model of the U.S. airline industry. Compared with previous studies, the model implies higher cost estimates, which see...

T ravel demand model calibration is ~ usually a very cumbersome process that involves several iterative trial-anderror procedures. The degree of difficulty in calibrating a travel demand model depends on several elements, including the scope of the study, the availability of data, the software used, the desired level of modeling precision, the experience of the modeler, and the demographic and ...

Growth in leisure travel has become increasingly significat economically, socially, and environmentally. However, flexible but uncoordinated travel behaviors exacerbate traffic congestion. Mobile phone records not only reveal human mobility patterns, but also enable us to manage travel demand for system efficiency. In this paper, we propose a location recommendation system that infers personal ...

Local bus network is the most popular transit mode and the only available transit mode in the majority of cities of the world. Increasing the utility of this mode which increases its share from urban trips is an important goal for city planners. Timetable setting as the second component of bus network design problem (network route design timetable setting vehicle assignment crew assignment) hav...