E.C. van Berkum

Detection of invalid loop detector data in urban areas

Urban traffic data can be used for purposes besides actuated signal control. However, it is important for the data to be of sufficient quality. This paper discusses a procedure for detecting invalid traffic data produced by single-loop detectors at signalized intersections. Basic quality checks—based on minimum and maximum flow thresholds—are used to detect erroneous data, whereas quality checks based on the principle of conservation of vehicles are introduced to detect inaccurate data. In most cases, the principle of conservation of vehicles implies that flow measurements have to be consistent between upstream and monitoring detectors within one intersection. The basic quality checks are appropriate for detecting erroneous data. Moreover, quality checks based on the principle of conservation of vehicles are a useful addition to basic quality checks, because they are appropriate for detecting inaccurate traffic data not detected by the basic quality checks. However, because flows are inconsistent between ...

Toward effective strategies for energy efficient network management

Trade-offs in efficiency, equity and acceptability arise as a central feature in traffic management. Todays urban traffic network management strategies focus on overall system performance and often overlook the interests of the individual road user. In addition, the emphasis is on travel time savings and scarcely on the environmental impact of traffic. This research contributes to knowledge on the trade-offs between collective and individual interests (multi-level) and accessibility, and the environment (multi-objective). The objective is to integrate these trade-offs in new strategies for energy efficient network management and evaluate these strategies with the ecoAdaptive Balancing and Control application of the eCoMove project. This paper discusses findings from literature review and presents the design of a Ph.D. research.