In this paper, we overview the current status of research in the field of collaborative sensing for urban transportation. We first classify the different types of sensors that can be relevant in collaborative urban sensing and then we analyze three different topics: parking spaces, traffic, and trajectories. We discuss issues regarding the sensing and data sharing approaches as well as relevant...

Large cities in Asia have unique transport problems. Traffic management alone is limited in solving the problems of urban transportation, and introduction of guided transit systems separate from ground-level transport is essential in solving these problems. This article describes some of the recent measures, including finance resources, taken to solve Asian urban transportation problems. The ad...

Multimodal transportation systems, with several coexisting services like bus, tram and metro, can be represented as time-resolved multilayer networks where the different transportation modes connecting the same set of nodes are associated with distinct network layers. Their quantitative description became possible recently due to openly accessible datasets describing the geo-localized transport...

IN T R O D U C T IO N Population forecasters have estimated that the 1970 census when reported will show close to 75 percent of the United States popula­ tion will be classified as urban. Once again one can expect that the greatest percentage change will occur in the urban fringes of central cities of population range of 25,000 to 100,000. Along with the in­ creased population growth and disper...

Background: Providing safe drinking water has critical importance to human societies. The aim of this study was to investigate microbiological quality of drinking water in distribution system of urban and rural regions of Ijroud, in Zanjan province.   Materials and Methods: In present descriptive study, the microbiological examination of drinking water was conducted in 15 facilities with...

In this paper we propose a dynamic Stackelberg game-theoretic model for urban freight transportation planning which is able to characterize the interaction between freight and personal transportation in an urban area. The problem is formulated as a bi-level dynamic mathematical program with equilibrium constraints (MPEC) which belongs to a class of computationally challenging problems. The lowe...

People travel between places of residence and work destinations via transportation networks. The relation between selection of home and work locations has been heavily debated in the transportation planning literature. In this paper we use circuity, the ratio of network to Euclidean distance, to better understand the choice of residential location relative to work. This is done using two method...

In the last 30 years, there have been three transportation master plan studies for the Hiroshima urban area, Japan. The planning software used in these studies have been developed by the consultants engaged in the studies. Generally, the transportation models developed for the Hiroshima projects have not been used elsewhere. There is also a lack of information regarding the uses and application...

The ceaselessly increasing number of trips on urban highways and major arterial roads have caused serious congestion and air pollution problems. Thus many transportation agencies have persevered in their efforts not only to alleviate such problems, but also to minimize social costs. However, the complex nature of such problems has strongly hindered transportation agencies’ ability to consider a...