GENERAL NOTES
GENERAL OPERATION
1. Use AØ yellow for CØ yellow if going CØ®BØ.
SIGNAL GROUP OPERATION
Signal Group 4
1 SG4 operates green-yellow-red in CØ.
2 SG4 goes red with SG1 in AØ, if going AØBØ, and remains red through BØ.
3 SG4 closes down at the end of CØ green.
4 SG4 remains red through AØ late start, then goes ‘blank’ at the start of AØ minimum green.
When P1 is demanded.
5 If going BØ ® AØ, with a demand for P1, hold SG4 red for the duration of Timer 1 (Special Purpose Timesetting No.9). Timer 1 starts timing at the start of P1 walk. When Timer 1 expires SG4 red is switched off.
6 If going CØ ® AØ, with a demand for P1, SG4 goes red at the start of CØ all red period, and is held red for the duration of Timer 1 (Special Purpose Timesetting No.9). Timer 1 starts timing at the start of P1 Walk. When Timer 1 expires SG4 red is switched off. 
7 AØ ECO is used to guarantee SG4 minimum blank period. Timer 2 (Special Purpose Timesetting No.10) starts timing at the start of SG4 blank period. When Timer 2 expires, expire AØ ECO.
Signal Group 5
Late start SG5 in BØ if going AØ®BØ.
PEDESTRIAN GROUP OPERATION
Pedestrian 1
P1 calls AØ.
P1 calls BØ if the controller is resting in AØ.
P1 can introduce during AØ late start.
Pedestrian 2
P2 calls BØ.
P2 can introduce at the start of BØ.
DETECTOR OPERATION
General
Clear vehicle demands during associated phase green and yellow.
Detector 5
Detector 5 places locking calls for AØ and non locking calls for CØ and extends AØ and CØ.
Detector 6
Clear demands for CØ from detector 6 during SG3 and SG6 green and yellow.
If in AØ with a demand for BØ, clear demands for CØ from detector 6.
When Z- (Master & Flexi) is set, detector 6 calls BØ instead of CØ.