Active traffic management (ATM) incorporates a collection of strategies allowing the dynamic management of recurrent and non-recurrent congestion, based on prevailing traffic conditions. These strategies help to increase peak capacity, smooth traffic flows, and increase safety on busy, major highways. Studies were conducted in a driving simulator to examine driver behavior in response to a variety of scenarios using ATM signs. The present research focuses on the use of variable speed limit (VSL) signs that are shown over each lane on a highway. The studies showed compliance with the VSL signs. Issues with respect to sign design, operational implementation, and driver speed selection, are discussed.
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