GENERAL NOTES
SUMMARY OF XSF FLAGS
(Communications Operation of XSF flags is required)
XSF1 - Allows the late introduction of P1 in AØ (Masterlink only).
XSF2 - Allows automatic introduction of P1.
XSF3 - Allows detector 8 to extend BØ.
XSF5 - Selects Special Maximum for SG5 in DØ via Special Purpose Timesetting No. 9.
XSF6 - Selects Special Maximum for SG6 in DØ via Special Purpose Timesetting No. 10.
SIGNAL GROUP OPERATION
SIGNAL GROUP 5
SG5 is controlled by a Special Movement Timer No. 1 within DØ. DØ All Red timesetting is substituted for Special Movement Timesetting No.1.
XSF5 flag is used to set special maximum time for SG5 in DØ. This time is accessible in Special Purpose Timesetting No.9. SG5 will be forced off after a period equal to the DØ minimum green plus this special maximum.
SIGNAL GROUP 6
SG6 is controlled by a Special Movement Timer No. 2 within DØ. DØ All Red timesetting is substituted for Special Movement Timesetting No.2.
XSF6 flag is used to set special maximum time for SG6 in DØ. This time is accessible in Special Purpose Timesetting No.10. SG6 will be forced off after a period equal to the DØ minimum green plus this special maximum.
PEDESTRIAN GROUP OPERATION
Pedestrian 1
P1 calls AØ.
P1 can introduce anytime in D3Ø and at the start of AØ and can overlap D3Ø -> AØ.
P1 can introduce anytime in AØ if XSF1 is set (Masterlink only)
P1 introduces automatically at the start of SG2 if XSF2 is set.
Pedestrian 2
P2 calls CØ.
P2 can introduce at the start of CØ.
OPERATION OF ADVANCED  WARNING SIGNS
Wait State 7 (WS7) and Wait State 8 (WS8) drive the flashing “PREPARE TO STOP” signs on the west and the east approaches of Bass Highway respectively.
Wait State 7 (WS7)
·        Drives the operation of two flashing “PREPARE TO STOP” signs on the west approach of Bass Highway.
·        Wait State 7 (WS7) is switched on at the start of AØ ECO when transitioning from AØ -> BØ,    AØ -> CØ, AØ -> D1Ø or AØ -> D3Ø.
·        Wait State 7 (WS7) switches off when SG1 is green in AØ or D2Ø. 
·        The flashing “Prepare to Stop” sign is activated from a point prior to SG1 closing down. This time is stored in AØ Early Cut-Off (ECO), and is calculated as follows:
Time = (Time to travel to Stop Line – Time to travel from nominal stopping distance to the Stop  Line + Reaction Time)
= (200/25) – 5 (i.e. SG1 Yellow Time) + 1.5
=4.5 sec.
Wait State 8 (WS8)
·        Drives the operation of two flashing “PREPARE TO STOP” signs on the east approach of Bass Highway.
·        Wait State 8 (WS8) is switched on at the start of AØ ECO when transitioning from AØ -> BØ, AØ -> CØ and AØ -> D1Ø or AØ -> D2Ø.
·        Wait State 8 (WS8) switches off when SG2 is green in AØ or D3Ø. 
·        Wait State 8 (WS8) is switched on at the start of AØ ECO if transitioning from AØ -> BØ, AØ -> CØ, AØ -> D1Ø or AØ -> D2Ø.
·        The flashing “Prepare to Stop” sign is activated from a point prior to SG2 closing down. This time is stored in AØ Early Cut-Off (ECO), and is calculated as follows:
Time = (Time to travel to Stop Line – Time to travel from nominal stopping distance to the Stop  Line + Reaction Time)
= (200/25) – 5 (i.e. SG1 Yellow Time) + 1.5
=4.5 sec.