Kyoungho Ahn

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The study estimates the energy and air quality impacts of route choice decisions using various fuel consumption and emission models with second-by-second floating-car GPS data. The study investigates two routes: a faster and longer highway route and a slower and shorter arterial route. The study demonstrates that the faster highway route choice is not(More)
Assessment of Alternative Polynomial Fuel Consumption Models for Use in Intelligent Transportation Systems Applications Bart Saerens a , Hesham Rakha b , Kyoungho Ahn b & Eric Van den Bulck a a Department of Mechanical Engineering, Katholieke Universiteit Leuven, Herverlee, Belgium b Center for Sustainable Mobility, Virginia Tech Transportation Institute,(More)
A vehicle predictive eco-cruise control system is developed that minimizes vehicle fuel consumption levels utilizing roadway topographic information. The predictive eco-cruise control system consists of three components: a fuel consumption model, a powertrain model, and an optimization algorithm. The developed system generates an optimal vehicle control(More)
This research develops a simple vehicle powertrain model that can be incorporated within microscopic traffic simulation software for the modeling of intelligent vehicle applications. This simple model can be calibrated using vehicle parameters that are publically available without the need for field data collection. The model uses the driver throttle level(More)
Vehicular ad hoc networks (VANETs) are a special case of mobile ad hoc networks (MANETs). The distinctive characteristics of VANETs include high-speed vehicular nodes and significant variability in node density. Collecting data from VANETs is important in monitoring, controlling, and managing road traffic. However, efficient collection of the needed data is(More)
Basic green extension transit signal priority (TSP) was implemented on U.S. Route 1 in the Northern Virginia Area. The study investigated the system-wide benefits of green extension TSP operation on the U.S. Route 1 corridor using the INTEGRATION microscopic traffic simulation software. The simulation results indicated that transit signal priority did not(More)
NOTICE The project that is the subject of this report was done under contract for the Virginia Department of Transportation, Virginia Transportation Research Council. The contents of this report reflect the views of the authors, who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the(More)
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