SCATS Adaptive Traffic System - Traffic Signal Systems Committee

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SCATS Data Smoothing and Damping• DS and VK are used as weighted averages usuallyover three cycles,• SCATS uses smoothing, damping (i.e.reducingthe gain of feedback control loops) and hysteresisextensively,• It is the calibration of these techniques over yearsof experience that is the key to effectiveperformance.22
SCATS DS Usage - Cycle LengthDelayCoCycle Length• Delay increases rapidlyfor CL below Co(optimum CL)• Exact CL not critical aslong as not less than Co• SCATS Subsystem CLdetermined from highestvalue of DS in thesubsystem.23
Page 4 and 5: SCATS System ArchitectureExpansion
Page 6: SCATS System ArchitectureRemote Reg
Page 9 and 10: SCATS GUI Example9
Page 11: SCATS Data Requirements• Degree o
Page 14 and 15: SCATS Communication Requirements•
Page 17 and 18: SCATS Traffic Controllers170 NEMA
Page 19 and 20: SCATS Degree of SaturationDS = [gre
Page 21: SCATS Car Equivalent Flow - VK• D
Page 25 and 26: SCATS DS Usage - Cycle Length• We
Page 27 and 28: SCATS DS Usage - Split Plan• For
Page 29 and 30: SCATS Offset Selection• A new off
Page 31 and 32: SCATS Coordination• All intersect
Page 33 and 34: SCATS Phasing Flexibility• In Iso
Page 35 and 36: SCATS Arterial/Network Capability
Page 37 and 38: SCATS Measures of Effectiveness•
Page 39 and 40: SCATS Priority Systems - System•
Page 41 and 42: SCATS and OversaturationIllustratio
Page 43 and 44: SCATS Management System• Inventor
Page 45: EndThank You

SCATS Adaptive Traffic System - Traffic Signal Systems Committee

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