The RHODES-ITMS Corridor Control project addresses real-time control of ramp meters of a freeway segment, with consideration of the traffic volumes entering and leaving the freeway from/to arterials, and the regulation of these volumes via real-time setting of ramp metering rates. Current approaches to traffic-responsive control of ramp meters include (1) time-of day control, (2) locally responsive strategies and (3) area-wide linear programming based approaches are both real-time responsive to traffic conditions and consider the multiple objectives of minimizing freeway travel times and decreasing congestion/queues at the interchanges. A control system, MILOS (Multi-objective Integrated Large-scale Optimized ramp metering System), was developed that determines ramp metering rates based on observed traffic on the freeway and its interchange arterials. MILOS temporally and spatially decomposes the ramp-metering control problem into three hierarchical subproblems: (1) monitoring and detection of traffic anomalies (to schedule optimizations at the lower levels of the control hierarchy), (2) optimization to obtain area-wide coorinated metering rates, and (3) real-time regulation of metering rates to adjust for local conditions. Simulation experiments were performed to evaluate the MILOS hierarchical system.
RHODES-ITMS Corridor Control Project
1999
214 pages
Report
No indication
English
Road Transportation , Transportation , Transportation & Traffic Planning , Ramps , Traffic metering controls , Real time operations , Freeways , Traffic control devices , Traffic metering , Traffic control , Traffic delay minimization , Literature reviews , Area traffic controls , Traffic management , Automatic traffic control , Ramp control , Traffic flow , Traffic simulation , MILOS ramp control system , RHODES Program
ITMS (Intelligent Traffic Management System)
Springer Verlag | 2016
|British Library Conference Proceedings | 1997
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