public SignalCycleData(SigControlType controlType, int cycleLengthSec)
{
_controlType = controlType;
_cycleLengthSec = cycleLengthSec;
_referencePhaseID = 1;
_offsetSec = 0;
}
public SignalCycleData(SigControlType controlType, int cycleLengthSec, List <SignalPhaseData> Phases)
{
_controlType = controlType;
_cycleLengthSec = cycleLengthSec;
_referencePhaseID = 1;
_offsetSec = 0;
_phases = Phases;
}
public void SetDefaultValues(AreaType area, int artClass, SigControlType sigControl) // Intersection
{
/*
* _cycleLen = ParmRanges.CycleLengthDefault[(int)area, artClass];
* //_gCthru = ParmRanges.gCThruDefault[(int)area];
* _gCthru = SignalCalcs.CalcGreenToCycleLengthRatio(_cycleLen);
* _arvType = ParmRanges.ArrTypeDefault[(int)sigControl];
* _numThLanes = ParmRanges.NumThruLanesDefault[(int)area];
* _pctLT = ParmRanges.PctLTDefault[(int)area];
* _pctRT = ParmRanges.PctRTDefault[(int)area];
* _excLTlane = ParmRanges.ExclLTlaneDefault[(int)area];
* _phasing = ParmRanges.LTphasing;
* _numLTlanes = ParmRanges.NumLTLanesDefault[(int)area];
* _LTlen = ParmRanges.LTbayLenDefault[(int)area];
* _gCleft = ParmRanges.gCLeftDefault[(int)area];
* _excRTlane = ParmRanges.ExclRTlaneDefault[(int)area];
* _width = ParmRanges.IntWidthDefault[(int)area];
* _overCap = false;
*/
}
public SignalCycleData()
{
_controlType = SigControlType.Pretimed;
//_sigControl = ParmRanges.SigControlDefault[Convert.ToInt32(_area), Convert.ToInt32(_class)];
//_sigControl = ParmRanges.SigControlDefault[Convert.ToInt32(_class)];
}
public static float QSratio(float AdjSatFlowThru, float SegDDHV, float PHF, int PctLT, SigControlType SigControl, int CycleLen, float gClt, float PreviousVC, int NumLTlanes, int LTbayLen, PhasingType LTphasing)
{
//Based on Appendix G of HCM 2000
float QSR = 0; //queue storage ratio
float VolLT;
float AdjSatFlowLT;
float CapacityLT;
float FlowRatioLT;
float vcLT;
float Rp = 1.0f; //assumed arrival type of 3
float PF2;
float Q1;
float Q2;
float Ivalue;
float kb;
//QbL = 0 //assumed that there is no initial queue at start of analysis period--this also simplifies some equations
//T = 0.25 //15-min analysis period, used in equation for Q2
//Lh = 25 ft (default vehicle spacing in queue)
//Note: do calculations in terms of one LT lane
AdjSatFlowLT = AdjSatFlowThru * 0.95f; //5% reduction from adjacent through lanes
VolLT = (SegDDHV / PHF) * (float)(PctLT) / 100 / NumLTlanes;
if (LTphasing == PhasingType.Protected)
{
CapacityLT = AdjSatFlowLT * gClt;
}
else //protected + permitted phasing
{
float NumPhasesPerHour = 3600 / CycleLen;
CapacityLT = AdjSatFlowLT * gClt + (NumPhasesPerHour * 2.5f); //increase capacity by 2.5 vehicles per phase
}
FlowRatioLT = VolLT / AdjSatFlowLT;
vcLT = VolLT / CapacityLT;
PF2 = ((1 - Rp * gClt) * (1 - FlowRatioLT)) / ((1 - gClt) * (1 - Rp * FlowRatioLT));
Q1 = PF2 * (((VolLT * CycleLen) / 3600) * (1 - gClt) / (1 - vcLT * gClt));
if (PreviousVC >= 1)
{
Ivalue = 0.09f;
}
else
{
Ivalue = (float)(1 - 0.91 * Math.Pow(PreviousVC, 2.68));
}
if (SigControl == SigControlType.Pretimed)
{
kb = (float)(0.12 * Ivalue * Math.Pow((AdjSatFlowLT * gClt * CycleLen) / 3600, 0.7));
}
else //Semiactuated or Fully Actuated
{
kb = (float)(0.1 * Ivalue * Math.Pow((AdjSatFlowLT * gClt * CycleLen) / 3600, 0.6));
}
Q2 = (float)(0.25 * CapacityLT * 0.25 * ((vcLT - 1) + Math.Pow(Math.Pow((vcLT - 1), 2) + (8 * kb * vcLT) / (CapacityLT * 0.25), 0.5)));
QSR = 25 * (Q1 + Q2) / LTbayLen; //(LTbayLen / NumLTlanes); LTbayLen is now total storage length, not per lane length
//if (QSR > 1)
//CalcsArterial.LTMessage = true; //turn on warning message for LT lane spillover
return(QSR);
}
