GENERAL NOTES
SUMMARY OF XSF FLAGS
XSF1 - For late introduction of P1 in AØ (Masterlink only).
XSF2 - For auto introduction of P1.
XSF3 - For auto introduction of P2.
GENERAL OPERATION
·         REVn. – First scan after start-up demands BØ, CØ & DØ
·         Clear demands during associated phase green and yellow times
·         If going from AØ -> DØ, close down SG2 together with SG1 and re-introduce SG2 at the end of DØ late start period. 
·         If going from BØ -> DØ or CØ ->DØ, SG2 introduces at the start of DØ late start period.
·         If transitioning from BØ -> DØ or BØ -> AØ, substitute CØ yellow for BØ yellow. 
·         If transitioning from DØ -> BØ or DØ -> CØ, substitute AØ yellow for DØ yellow.
PEDESTRIAN GROUP OPERATION
Pedestrian 1
P1 calls AØ.
P1 can introduce at the start of AØ.
P1 can introduce at any time in AØ if XSF1 is set (Masterlink only).
P1 auto introduces at the start of AØ if XSF2 is set (all modes).
Pedestrian 2
P2 calls AØ.
P2 can introduce at anytime in DØ & at the start of AØ and can overlap from DØ -> AØ.
P2 auto introduces at the of SG2 if XSF3 is set (all modes).
Pedestrian 3
P3 calls CØ.
P4 can introduce at the start of CØ.
Pedestrian 4
P4 calls CØ.
P4 can introduce at anytime in BØ & at the start of CØ and overlap from BØ -> CØ.