GENERAL NOTES
SIGNAL GROUP OPERATION
Signal Group 2
1.                   SG2 has an ECO period when transitioning from AØ to any other phase.
2.                   When transitioning from AØ → DØ, close down SG1 together with SG3, then re-introduce SG1 at the end of DØ late start period.
3.                   When transitioning from CØ → AØ, introduce SG2 at the start of CØ all-red period.
4.                   When transitioning from DØ → AØ, introduce SG2 at the start of DØ all-red period.
PEDESTRIAN GROUP OPERATION
Pedestrian 1
1.                   P1 calls AØ.
2.                   P1 can introduce any time in DØ and at the start of AØ and can overlap from DØ → AØ.
Pedestrian 2
1.                   P2 calls AØ.
2.                   P2 can introduce at the start of AØ.
Pedestrian 3
1.                   P3 calls CØ.
2.                   P3 can introduce at the start of CØ.
Pedestrian 4
1.                   P4 calls CØ. 
2.                   P4 can introduce at the start of CØ.
DETECTOR OPERATION
General
1.                   Clear vehicle demands during associated phase green and yellow.
Detector 3 
1.                   Detector 3 places non-locking calls for DØ when its presence timer expires.
2.                   Clear demands for DØ from detector 3 during SG5 green and yellow.
Detector 5
1.              Detector 5 places non-locking calls for BØ when its presence timer expires.
2.              Clear demands for BØ from detector 5 during SG6 green and yellow.
Detector 8 and 9
1.                   Detector 8 and 9 are cyclist push buttons
2.                   Activation of detector 8 and/or detector 9 adds the increment to CØ minimum green.
NOTES ON OPERATION IN TRAIN PHASE
RAIL LINK NOTES
CONTROLLER INTERFACE INFROMATION 
“CABLE MONITOR” (CONTINUITY) INPUT Via Detector 17
“RELEASE/FORCE” (RF) INPUT Via Detector 18
“CALL” INPUT Via Detector 19
“BOOMS HORIZONTAL” INPUT Via Detector 20
“TRAFFIC LIGHT RESPONSE” (TLR) INPUT Via Signal Group 12
RAIL LINK OPERATION  
1. On the receipt of the “CALL” input the controller will terminate the running phase (without violating minimum green or pedestrian times) and proceed to the phase shown in the following phase transitions which is dependent upon which phase is running at the time of the “CALL”.
i.                     If in AØ, then go to BØ then E2Ø
ii.                   If in BØ, then go to E2Ø
iii.                  If in CØ, then go to E2Ø
iv.                 If in DØ, then go to E1Ø
2. If the controller is changing phases when the “CALL” is received then do NOT service the pedestrians in the phase which is about to run. 
3. The controller provides phase status information to the Railway Authority in the form of a “TRAFFIC LIGHT RESPONSE” (TLR) output. The FLASHING YELLOW response to the RF input is suspended during the period that the TLR output is activated. The TLR output is commenced at the start of the train phase green period or at the start of BØ intergreen, whichever occurs sooner. The TLR output is terminated when the “BOOMS HORIZONTAL” input terminates. At this point, the TLR output changes from “green” to “yellow”. It then changes to “red” when the “RF” input is reinstated.
4. Although 35 seconds at least should elapse between receipt of the “CALL” input and the termination of the “RF” input, there may be occasions when the “RF” input is terminated prior to the activation of the TLR output. This will force a FLASHING YELLOW response and generate the ABNORMAL CONDITION message No. 1.
5. Termination of the “BOOMS HORIZONTAL” input initiates a pre-release sequence which directs the controller to terminate all signal groups in the train phase without violating pedestrian or minimum green times. The controller will stay in this “train phase ALL-RED status” until the “RF” input is reinstated, thus allowing the controller to resume normal vehicle operation. 
If the “RF” input is not reinstated before the expiry of the timesetting in Special Purpose Timesetting No. 16, then the controller will generate the ABNORMAL CONDITION message No. 2 and go to FLASHING YELLOW until the “RF” input is reinstated. This timer begins to count down upon termination of the “BOOMS HORIZONTAL” input.
6. After the termination of the “BOOMS HORIZONTAL” input, if a second “CALL” is received PRIOR to the controller being in the train phase intergreen period (i.e. the booms have moved off the horizontal) it will proceed to BØ. If a second “CALL” is received DURING the train phase intergreen period, then the controller will service the next vehicle phase, i.e. AØ, with no pedestrian introduction for the minimum green time only before going back into BØ and then into the train phase again.
FAULT CONDITIONS
a. If the “RF” input is terminated without a previous “CALL” input, the controller will generate the ABNORMAL CONDITION message No. 3 and go to FLASHING YELLOW until the “RF” input is reinstated afterwhich it will go through an ALL-RED start-up sequence, then resume normal operation.
b. If there is a break in the “CABLE MONITOR” input, the controller will generate an ABNORMAL CONDITION message No. 4 and go to FLASHING YELLOW indefinitely. When this input is restored, the controller will go through an ALL-RED start-up sequence, then resume normal operation.
SPECIAL CONDITIONS
1. When a “CALL” input terminates in the presence of the “RF” input a timer will begin to count down from Special Purpose Timesetting No. 15. Any further “CALL” inputs will reset the timer, If the “RF” is not terminated prior to expiry of the timer, then the controller will resume normal vehicle operation.
2. When the “CALL” input is received MSS1 flag will be set. This will stay on until the end of AØ green. During this time the MSS1 flag will instruct (via VP table) the controller to be forced to ISOLATED OPERATION. The first time AØ runs after the train phase, select Special Purpose Timesetting No. 17 for AØ maximum extension.
3. Flexilink operation can be run at this site.
4. When in EØ
a.                   Controller can transition between E1Ø, E2Ø and E3Ø, depending on demand.
b.                   P1 can introduce at the start of E3Ø.
c.                   P2 can introduce at the start of E3Ø.
d.                   P3 can introduce at the start of E1Ø, E2Ø and E3Ø and overlap between the sub phases.
e.                   P4 can introduce at the start of E2Ø or E3Ø.
f.                    Detectors 1 and 3 call and extend E1Ø.
g.                   Detectors 6, 7, 8 and 9 to call E2Ø, while detectors 6 and 7 also extend E2Ø.
h.                   P1 and P2 call E3Ø.
i.                     P3 and P4 call E2Ø
ABNORMAL CONDITION MESSAGES
a)      Message No. 1 via MSS2
“RF terminated before activation of TLR”
b)      Message No. 2 via MSS3
“RF not received after pre-release”
c)      Message No. 3 via MSS4
“RF terminated without a call”
d)      Message No. 4 via MSS5
“Break in cable monitor”