GENERAL NOTES
SUMMARY OF XSF FLAGS
XSF1 - Allows the late introduction of P1 in AØ (Master).
XSF2 - Allows the late introduction of P2 in AØ (Master).
XSF5 - Selects Special Maximum for SGs 5 & 8 in CØ (Special Purpose Timesetting No.9) (All modes).
XSF6 - Selects Special Maximum for SGs 6 & 7 in CØ (Special Purpose Timesetting No.10) (All modes).
SIGNAL GROUP OPERATION
Signal Group 5
1.    SG5 is controlled by Special Movement Timesetting No.1 in CØ.
CØ All Red timesetting is substituted for Special Movement Timesetting No.1.
2.    XSF5 is used to set the maximum extension green time for SG5 in CØ.
This time is stored in Special Purpose Timesetting No. 9.
SG5 is forced off after this maximum extension green time.
Signal Group 6
1.    SG6 is controlled by Special Movement Timesetting No.2 in CØ.
CØ All Red timesetting is substituted for Special Movement Timesetting No.2.
2.    XSF6 is used to set the maximum extension green time for SG6 in CØ.
This time is stored in Special Purpose Timesetting No.10.
SG6 is forced off after this maximum extension green time.
Signal Group 7
1.    SG7 is controlled by Special Movement Timesetting No.3 in CØ.
CØ All Red timesetting is substituted for Special Movement Timesetting No.3.
2.    XSF6 is used to set the maximum extension green time for SG7 in CØ.
This time is stored in Special Purpose Timesetting No. 10.
SG7 is forced off after this maximum extension green time.
3.    Late start SG7 in CØ if going BØ®CØ.
Signal Group 8
1.    SG8 is controlled by Special Movement Timesetting No.4 in CØ.
CØ All Red timesetting is substituted for Special Movement Timesetting No.4.
2.    XSF5 is used to set the maximum extension green time for SG8 in CØ.
This time is stored in Special Purpose Timesetting No. 9.
SG8 is forced off after this maximum extension green time.
3.    Late start SG8 in CØ if going BØ®CØ.
PEDESTRIAN GROUP OPERATION
Pedestrian 1
P1 calls AØ. 
P1 can introduce at anytime in C2Ø and at the start of AØ and can overlap C2Ø ®
In Master P1 can introduce at any time in AØ while XSF1 is set.
Pedestrian 2
P2 calls AØ. 
P2 can introduce at anytime in C3Ø and at the start of AØ and can overlap C3Ø ®
In Master P2 can introduce at any time in AØ while XSF2 is set.
Late start P2 in AØ if going C1Ø or C2Ø®AØ using a special timer (CØ special all red) that starts at the end of SG5 yellow.
Late start P2 in CØ if going C1Ø®C3Ø using a special timer (CØ special all red) that starts at the end of SG5 yellow.
Pedestrian 3
P3 calls BØ. 
P3 can introduce at the start of BØ.
DETECTOR OPERATION
General
Clear vehicle demands during associated phase green and yellow.
Detector 3
Clear demands for CØ from detector 3 during SG5 green and yellow.
Detector 7
Clear demands for CØ from detector 7 during SG6 green and yellow.
OPERATION OF PREPARE TO STOP SIGNS
Relay Output 1 (P4 Wait State/SO1) drives a “Prepare to Stop/Blank” sign located 120 metres to the west of the intersection. (Note: BLANK refers to sign showing no display).
1.    Relay Output 1 (P4 Wait State/SO1) is to be switched on at the start of AØ ECO if going AØ ® BØ, AØ®C1Ø or AØ®C2Ø.
2.    Relay Output 1 (P4 Wait State/SO1) remains on until one of the following conditions is met:
·         Timer 1 (refer Special Purpose Timesetting no. 11) expires.  Timer 1 starts timing at the start of SG2 green. (Note: Timer 1 should be equal to or less than AØ minimum green.)
·         Detectors 4, 5 and 6 become unoccupied for duration of Timer 2 (refer Special Purpose Timesetting no. 12) (gap time) during SG2 green.
CALCULATION OF AØ ECO
AØ ECO  = time to travel from the “Prepare to Stop” sign to the stop line (north approach)
- time to travel from the nominal stopping distance to the stop line (phase yellow)
+ reaction time (including the time to travel the viewing distance)
=  (120 m / 19.4 ms-1) - 4.5 s (AØ yellow) + 1.5 s
=  6.2 - 4.5 + 1.5 s
=  3.2 s  (ECO set to 4.0 s)
NOTE: if ECO were set at 3.5 s then motorists just missing the start of the flashing “Prepare to Stop” sign could still be faced with 2.7 s of yellow.  As a rule of thumb, to avoid confusion/indecision, ECO should be set such that motorists in the above situation are faced with less than half the phase yellow.