Intelligent Transportation Systems

Document Date: 
Thu, 2004-04-01
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Intelligent transportation systems (ITS) include state-of-the-art wireless, electronic, and automated technologies. Collectively, these technologies have the potential to integrate vehicles (transit, trucks, and personal vehicles), system users, and infrastructure (roads and transit). Although ITS technologies are still in the early phase of deployment, many have shown the potential to reduce energy use. During the past 10 years or so, fuel consumption impacts of the following ITS technologies have been studied: 1) traffic signal control, 2) traffic management and surveillance (e.g., ramp metering), 3) incident management, 4) electronic toll collection (ETC), 5) traveler information, 6) transit management, 7) commercial vehicle operations (CVO), and 8) vehicle control technologies. They are the focus of this article. Nevertheless, ITS impacts, including benefits, unintended consequences, and aggregate effects, are still not well understood. The field of intelligent transportation systems, energy consumption impacts, current measurement tools, and early findings are discussed in this article.


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