SCATS Adaptive Traffic System - Traffic Signal Systems Committee

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SCATS and Oversaturation• SCATS DS can be >100% i.e. oversaturated,• “Stretch effect” i.e. all stages share extra CL up toXCL after which only the stretch (usuallycoordination) stage gets the benefit (i.e. a moveaway from equisat),• SCATS allows the traffic engineer to decidewhich route should be favored, by how much andwhere the queue can be tolerated.40
SCATS and OversaturationIllustration of the Stretch effectSplitAStretchBCCLLCL XCL HCL41
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 and 22: SCATS Car Equivalent Flow - VK• D
Page 23 and 24: SCATS DS Usage - Cycle LengthDelayC
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: SCATS Priority Systems - System•
Page 43 and 44: SCATS Management System• Inventor
Page 45: EndThank You

SCATS Adaptive Traffic System - Traffic Signal Systems Committee

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