Incident Management, Fast-Trac, Phase Iib Deliverables, #20. The Model Analysis Report On The Benefits Of Scats In Alleviating The Impacts Of Incidents
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1996-01-01
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Abstract:FAST-TRAC
SELECTING THE MOST APPROPRIATE TRAFFIC CONTROL STRATEGY FOR INCIDENT CONGESTION MANAGEMENT CAN HAVE A MAJOR IMPACT ON THE EXTENT AND DURATION OF THE RESULTING CONGESTION. THIS RESEARCH INVESTIGATED THE EFFECTIVENESSES OF SEVERAL CONTROL STRATEGIES ON VARIOUS INCIDENT CONDITIONS. THE SELECTED CONTROL STRATEGIES REPRESENTING POSSIBLE ITS TECHNOLOGIES INCLUDED TRAFFIC METERING (ATMS), TRAFFIC DIVERSION (ATIS), AND TRAFFIC DIVERSION WITH SIGNAL TIMING MODIFICATION (ATIS/ATMS). THE ANALYSIS WAS CONDUCTED ON A HYPOTHETICAL DENSE GRID SURFACE STREET NETWORK. MID-BLOCK INCIDENTS OF VARIOUS DURATIONS WERE TESTED. THE RESULTS INDICATED THAT THE ATIS/ATMS BASED SOLUTION CAN REDUCE CONGESTION DURATION UP TO 27 MINUTES, WITH A SAVING OF 261 VEHICLE-HOURS OF DELAY. A SENSITIVITY ANALYSIS WAS PERFORMED TO OBTAIN THE EFFECTIVENESSES OF VARIOUS CONTROL STRATEGIES UNDER DIFFERENT DEMAND LEVELS. SEVERAL ALTERNATE DIVERSION PLANS AND CONTROL VARIABLES FOR INITIATING SIGNAL MODIFICATION WERE ALSO TESTED
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