Panos G. Michalopoulos, P. P. Papapanou

Research output: Contribution to journalArticlepeer-review


Since the inception of the first freeway control system nearly two decades ago, many freeway control concepts have been proposed and applied in real life situations. Some have been very successful in improving freeway operating conditions, while more sophisticated ones have, in general, resulted in diminishing returns for the additional investment. Due to space limitations in this paper, the most widely known schemes for only isolated ramp control are discussed and practical considerations concerning their applicability are presented. Finally, a mathematical model is presented for optimal traffic flow splits between a freeway and a parallel arterial street (frontage road). Use of the model is recommended if both the freeway and its parallel arterial streets are treated as a system so that the operation of both facilities rather than the freeway alone is optimized.

Original languageEnglish (US)
JournalModeling and Simulation, Proceedings of the Annual Pittsburgh Conference
StatePublished - Jan 1 1979


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