GENERAL NOTES
START UP
At START UP the controller goes immediately to BØ and extends BØ to maximum.
GENERAL NOTES
1.             Controller can rest in either BØ or DØ.
2.             Phase Change Priority.
For each phase, the follow table describes the priority order for servicing any demand phases:
Current Phase Priority Comments
1. BØ Unconditional (i.e. Controller must go to BØ after AØ).
1. CTO phase Controller will go BØ -> CTO phase immediately, provided BØ minimum has expired.
2. CØ If the controller is going BØ -> CØ then BØ must extend to least the maximum extension green.
3. AØ Controller will go BØ -> AØ immediately, provided BØ minimum has expired.
1. DØ Unconditional (i.e. Controller must go to DØ after CØ).
1. CTO phase Controller will go DØ -> CTO phase immediately, provided DØ minimum has expired.
2. AØ If the controller is going DØ -> AØ then DØ must extend to at least the maximum extension green.
3. CØ Controller will go DØ -> CØ immediately provided DØ minimum has expired.
CTO phase AØ or CØ (Dependent on previous operating phase before CTO phase) • If the previous phase (before going to the CTO phase) was BØ, then the controller must go to CØ.
• If the previous phase (before going to the CTO phase) was DØ, then the controller must go to AØ.
 
OPERATION OF DETECTOR 4 – PERMANENT DEMAND FOR A PHASE AND C PHASE.
The operation of Detector 4 is summarised in the table below:
Detector 4 Position Operation
SHORT CIRCUIT A permanent demand is placed for AØ and CØ.
NORMAL Normal Operation
CONTROL TAKE OVER PHASE (B Phase)
The CONTROL TAKE OVER (CTO) PHASE (i.e. BØ) is controlled by a 2 position switch in the Telstra Hatch of the controller. This switch is connected to Detector input No. 3.
The operation of the switch is summarized in the table below:
Switch Position Detector 3 position Operation
ON Short Circuit CTO phase is demanded and extended for as long as the switch is in the ON position
OFF NORMAL Normal operation.
Operation when CTO phase is demanded
If the controller is in AØ when CTO phase is demanded AØ is first allowed to gap out or extend to maximum before going to the CTO phase. (Note: The controller actually goes through BØ to get to the CTO phase).
If the controller is in CØ when the CTO phase is demanded CØ is first allowed to gap out or extend to maximum before going to the CTO phase. (Note: the controller actually goes through DØ to get to the CTO Phase).
If the controller is in BØ when CTO phase is demand then remain in BØ (which becomes the CTO phase).
If the controller is in DØ when CTO phase is demand then remain in DØ (which becomes the CTO phase).
The CTO phase operates for at least the time specified in Special Purpose Timesetting No.13.
OPERATION DURING FLEXILINK PLANS
During the period that Flexilink Plan 1 or 2 is scheduled, substitute Special Purpose Timesetting for AӨ and CӨ Maximum Extension Greens as per the following table
Flexilink Plan AØ Maximum Ext Green CØ Maximum Ext Green
1 Special Purpose Timesetting No.9 Special Purpose Timesetting No.10
2 Special Purpose Timesetting No.11 Special Purpose Timesetting No.12
Note: The changes described above occur even when the controller is operating in Masterlink or Isolated mode and Flexilink Plan 1 or 2 is set in the “background” via Flexilink Schedule 
FLEXILINK SCHEDULES 
The FLEXILINK schedules shown on page 12 operate the Flexilink Plan(s)
CALCULATION OF B PHASE AND D PHASE TIMESETTINGS
BØ and DØ are the “all red” phases which are used to clear traffic across the bridge after the particular vehicle group has operated.
The following calculation is carried out in order to find the clearance time across the bridge:
Distance across the bridge from Stopline to Stopline: 270 meters
Assumed speed across the bridge:   15Km/hr (4.16 meters / Second) 
Clearance Time Required:   65 seconds
From the calculate Clearance Time (See above) the Timesetting for BØ and DØ are determined as shown below:
Timesetting Time (seconds)
AØ All Red or CØ All Red  2
BØ Minimum Green or DØ Minimum Green 4
BØ Maximum Extension Green or DØ Maximum Extension Green  56
BØ Yellow or DØ Yellow 3
Total Clearance Time 65