UrbanSim is a new urban simulation model, developed over the past several years, which is now operational in three urban areas in the United States. The model system is designed to address emerging needs to better coordinate transportation and land use planning as a result of recognition of the strong interactions between land use and transportation, increasing pressure from federal transportat...

In order to maintain and improve road infrastructure in their respective jurisdictions, the state (the Minnesota DOT), region (the Metropolitan Council), and seven counties in the Twin Cities Metropolitan area develop their respective decision making (investment) processes in which federal or local funding are periodically allocated to road projects, prioritized according to their funding needs...

The need for new transportation paradigms to address the problems associated with widespread dependence on personal automobiles appeared within a few decades of cars becoming available in large numbers, and has been growing ever since. These problems include traffic congestion, noise and air pollution, and the isolation of those without access to private vehicles. Throughout the years, research...

The security of the transportation system depends on that of any of its components and how they are interlinked. But the securing of each component is oftentimes in the hand of the agency in whose jurisdiction it falls. Literature on reliability and security economics suggests that when security is defined by the weakest link in an interlinked system, then its level is determined by the agent w...

Automobiles and roads are as much of a way of experiencing national parks as they are a means of conveyance. This study examines experiential aspects of transportation on Acadia National Park’s primary scenic road – Ocean Drive. Interviews with vehicle-based road users were conducted to identify indicators to measure and manage experiential quality on Ocean Drive. Also, a survey was conducted t...

Intelligent transportation clouds could provide Services such as autonomy, mobility, decision support and the standard development Environment for traffic management strategies, and so on. With mobile agent technology, an urban-traffic management system based on Agent-Based Distributed and Adaptive Platforms for Transportation Systems (Adapts) is both feasible and effective. However, the large-...

Accessibility is both an important concept, and a powerful indicator, in the understanding of the impact of spatial technologies, i.e. transportation, communication, and information technologies. However, virtually all existing measures of intra-metropolitan accessibility incorporate only transportation without considering other means of spatial interaction. In this paper, the author argues tha...

Brazil is a Federal South American Republic, in which there are 27 federated states divided into 5 regions and Brasília, the federal capital. In 30 years, the country has almost doubled its population. From 93 millions people in 1970 to 182 millions people in 2004. Nowadays, more than 80% of Brazilian population lives in the urban centers, from which 30% are concentrated on the Metropolitan Reg...

In this paper we present a search problem in which mobile agents are searching for static resources. Each agent wants to obtain exactly one resource. Both agents and resources are spatially located on a road network and the movement of the agents is constrained to the road network. This problem applies to various transportation applications including: vehicles (agents) searching for parking (re...

Hydrogen is the most environmentally friendly fuel and can be efficiently used for stationary power and mobile applications. When burned or oxidized, it generates water as the only emission (small amounts of NOx are generated during the combustion process but can be controlled to very low levels). At present, hydrogen is produced almost entirely from fossil fuels such as natural gas, naphtha, a...