| GENERAL NOTES | ||||||||||||||||
| SUMMARY OF XSF FLAGS | ||||||||||||||||
| (Communications Operation of XSF flags is required) | ||||||||||||||||
| XSF1 | - | Inhibits calls for SG1 from queue detectors 1, and 2. | ||||||||||||||
| XSF2 | - | Place a permanent demand for BØ. | ||||||||||||||
| GENERAL OPERATION | ||||||||||||||||
| 1. The introduction of SG2 conditional on the termination of SG1. | ||||||||||||||||
| 2. BØ is provided to meet the SCATS requirement of a minimum of two phases. | ||||||||||||||||
| 3. SG1and SG2 use the yellow time of the phase in which they close down and the red times specified in the Special Movement Timesetting Nos. 1and 2 respectively. | ||||||||||||||||
| SIGNAL GROUP OPERATION | ||||||||||||||||
| Signal Group 1 | ||||||||||||||||
| 1. For SG1 minimum green time refer to Special Purpose Timesetting No. 9. | ||||||||||||||||
| 2. For SG1 maximum extension green time refer to Special Purpose Timesetting No. 11. | ||||||||||||||||
| Signal Group 2 | ||||||||||||||||
| 1. For SG2 minimum green time refer to Special Purpose Timesetting No. 10. | ||||||||||||||||
| 2. For SG2 maximum extension green time refer to Special Purpose Timesetting No. 12. | ||||||||||||||||
| 3. Detectors 3 and 4 extend AØ. | ||||||||||||||||
| DETECTOR OPERATION | ||||||||||||||||
| Queue Detectors 1 and 2 | ||||||||||||||||
| 1. Queue detectors 1 and/ or 2 place non-locking calls for BØ when their presence timers have expired. XSF1 inhibits calls for SG1 from queue detectors 1 and 2. | ||||||||||||||||
| 2. Queue detectors 1and 2 extend BØ. | ||||||||||||||||
| 3. Queue detectors 1and 2 do not alarm in the ‘OFF’ state. | ||||||||||||||||
| 4. If detector 1 is ‘ON’ continuously, the queue function will not be recalled by detector 1 until detector 1 changes state from ‘ON’ to ‘OFF’. | ||||||||||||||||
| 5. If detector 2 is ‘ON’ continuously, the queue function will not be recalled by detector 2 until detector 2 changes state from ‘ON’ to ‘OFF’. | ||||||||||||||||
| 6. The failure of detectors 1 and 2 in the ‘ON’ state will flag a ‘DA’ alarm for monitoring purposes. | ||||||||||||||||
| Queue Detectors 3 and 4 | ||||||||||||||||
| 1. Queue detectors 3 and 4 extend AØ. | ||||||||||||||||
| 2. Queue detectors 3 and 4 do not alarm in the ‘OFF’ state. | ||||||||||||||||
| 3. If detector 3 is ‘ON’ continuously, the queue function will not be recalled by detector 3 until detector 3 changes state from ‘ON’ to ‘OFF’. | ||||||||||||||||
| 4. If detector 4 is ‘ON’ continuously, the queue function will not be recalled by detector 4 until detector 4 changes state from ‘ON’ to ‘OFF’. | ||||||||||||||||
| 5. The failure of detectors 3 and 4 in the ‘ON’ state will flag a ‘DA’ alarm for monitoring purposes. | ||||||||||||||||