GENERAL NOTES
SUMMARY OF XSF FLAGS
XSF1 – Allows the late introduction of P1 in AØ (Master). 
XSF4 – Allows P3 to call P4 (All Modes). 
XSF5 – Allows P3 to call P5 (All Modes). 
GENERAL OPERATION
1.    Use AØ special all red for AØ red if going AØ→CØ.
2.    Use CØ yellow for BØ yellow if going BØ→AØ 
SIGNAL GROUP OPERATION
Signal Group 3
1.    SG3 is conditional on P2 in BØ. 
2.    SG3 can only introduce in BØ after P2 if CØ is the next phase to run. 
3.    SG3 overlaps BØCØ. 
Signal Group 4
1.    SG4 operates green-yellow-red in BØ. 
2.    SG4 goes red with SG3 in CØ, and remains red through AØ. 
3.    SG4 closes down at the end of BØ green, remains red through CØ late start, then goes ‘blank’ at the start of CØ minimum green.
When P4 is demanded.
4.    If going AØCØ with a demand for P4, hold SG5 red for the duration of Timer 1 (Special Purpose Timesetting No.14). Timer 1 starts timing at the start of P4 walk. When Timer 1 expires SG4 red is switched off. 
5.    If going BØCØ, with a demand for P4, SG4 goes red at the start of BØ all red period, and is held red for the duration of Timer 1 (Special Purpose Timesetting No.14). Timer 1 starts timing at the start of P4 Walk. When Timer 1 expires SG4 red is switched off.
6.    CØ ECO is used to guarantee SG4 minimum blank period. Timer 2 (Special Purpose Timesetting No.15) starts timing at the start of SG4 blank period. When Timer 2 expires, expire CØ ECO.
Signal Group 5
1.    Late start SG5 in AØ if going CØAØ using a special timer (CØ special all red), that starts timing at the end of CØ yellow. 
2.    SG5 green can overlap AØBØ (provided there is no demand for P5) and BØAØ. 
3.    SG5 can only introduce in BØ after P5 if AØ is the next phase to run. 
Signal Group 6
1. Late start SG6 in AØ if going CØAØ. 
PEDESTRIAN GROUP OPERATION
Pedestrian 1
P1 calls AØ
P1 can introduce at the start of AØ. 
In Master P1 can introduce at any time in AØ while XSF1 is set. 
Pedestrian 2
P2 calls BØ
P2 can introduce at the start of BØ.
Provide 3 seconds solid don’t walk at the end of P2 clearance. 
Late start P2 in BØ if going CØBØ
Pedestrian 3
P3 calls CØ
P3 can introduce at anytime in BØ and at the start of CØ and can overlap BØCØ.
When XSF4 is set P3 calls P4. 
When XSF5 is set P3 calls P5. 
Pedestrian 4
P4 calls CØ
P4 can introduce at the start of CØ.
P4 calls P3
Pedestrian 5
P5 calls CØ
P5 can introduce at the start of BØ and CØ and can overlap BØCØ
P5 calls P3
Provide 3 seconds of solid don’t walk at the end of P5 clearance. 
DETECTOR OPERATION
General
Clear vehicle demands during the associated phase green and yellow.