GENERAL NOTES
SUMMARY OF XSF FLAGS
XSF1 - Allows the auto introduction of P1 in AØ.
XSF2 - For permanent demand of P2 in CØ.
XSF3 - Allows detector 7 to extend CØ or DØ.
GENERAL OPERATION
REVn. – first scan after start-up demands .
Clear phase demands during associated green and yellow times.
Use AØ yellow for DØ yellow if transitioning from DØCØ.
Use DØ yellow for BØ yellow if transitioning from BØAØ.
Use BØ Special All Red when transitioning from BØAØ.
SIGNAL GROUP OPERATION
Signal Group 4 – Partially Controlled Right Turn (Red Arrow Drop-Off Operation)
·         SG4 operates Green/Yellow/Red in BØ & DØ and can be switched to blank in AØ.
·         If there is no P1 demand in AØ, SG4 red will be switched off at the end of AØ late start period.
·         If P1 runs in AØ, SG4 is held red in AØ for the duration of Timer 1 (which starts timing at the start of P1 walk using Special Purpose Timesetting No. 12).  When Timer 1 expires, SG4 red is switched off in AØ if it is later than AØ late start period.
·         AØ ECO is used to guarantee SG4 minimum blank period in AØ. Timer 2 (Special Purpose Timesetting No.13) starts timing at the beginning of SG4 blank period. When Timer 2 expires, expire AØ ECO period.
SG4 will be switched to red at the start of SG1 red in AØ and is held red in CØ.
PEDESTRIAN GROUP OPERATION
Pedestrian 1
P1 demands AØ.
P1 introduce after Timer 3 expires in AØ, Timer 3 (Special Purpose Timesetting No. 15) start timing at the start of AØ.
P1 can auto introduces in AØ, when XSF1 is set (all modes).
Pedestrian 2
P2 demands CØ.
P2 can introduce at the start of CØ.
P2 is permanently demanded when XSF2 is set (all modes).
DETECTOR OPERATION
Detector 3
Detector 3 places non-locking calls for BØ & DØ after its presence time expires and can extend BØ & DØ.
During BØ green and yellow, clear calls for DØ via detector 3.
During DØ green and yellow, clear calls for BØ via detector 3.