| GENERAL NOTES | |||||||||||||||||||||||||||
| GENERAL OPERATION | |||||||||||||||||||||||||||
| 1. Expire Aj ECO if going AjŪBj, AjŪDj and AjŪEj. | |||||||||||||||||||||||||||
| 2. Expire Dj ECO if going DjŪEj. | |||||||||||||||||||||||||||
| SIGNAL GROUP OPERATION | |||||||||||||||||||||||||||
| SIGNAL GROUP 1 & SIGNAL GROUP 2 | |||||||||||||||||||||||||||
| VA Mode | |||||||||||||||||||||||||||
| 1 | SG1 and SG2 close down at the start of Aj yellow. | ||||||||||||||||||||||||||
| Masterlink and Flexilink | |||||||||||||||||||||||||||
| 1. If going AjŪCj or AjŪFj with a demand for P1, SG1 and SG2 close down at the start of Aj yellow. | |||||||||||||||||||||||||||
| 2. If SG1 and SG2 run to the end of minimum green (refer to Special Purpose Timesetting No. 11) in Bj with a demand for P1, start Timer 1 (Refer to Bj ECO). When Timer 1 expires, SG1 and SG2 close down. Timer 1 is reset at the start of SG1 green. | |||||||||||||||||||||||||||
| 3. If going DjŪFj with a demand for P1, SG1 and SG2 close down at the start of Dj yellow. | |||||||||||||||||||||||||||
| 4. If SG1 and SG2 run to the end of minimum green (refer to Special Purpose Timesetting No. 11) in Ej with a demand for P1, start Timer 1 (Refer to Ej ECO). When Timer 1 expires, SG1 and SG2 close down. Timer 1 is reset at the start of SG1 green. | |||||||||||||||||||||||||||
| OPERATION OF PREPARE TO STOP SIGN | |||||||||||||||||||||||||||
| P4 Wait State output drives the PREPARE TO STOP sign located about 220m north of the southbound stop line of the POS. | |||||||||||||||||||||||||||
| VA Mode: | |||||||||||||||||||||||||||
| P4 Wait State is switched on at the start of Aj ECO and remains on until Timer 2 (refer to Special Purpose Timesetting No. 12) expires. Timer 2 starts timing at the start of SG1 green. Timer 2 is reset at the start of SG1 green (Note: Timer 2 should be equal to or less than SG1 minimum green). | |||||||||||||||||||||||||||
| Masterlink and Flexilink: | |||||||||||||||||||||||||||
| If going AjŪCj or AjŪFj with a demand for P1, P4 Wait State is switched on at the start of Aj ECO. If going DjŪFj with a demand for P1, P4 Wait State is switched on at the start of Dj ECO. | |||||||||||||||||||||||||||
| If going BjŪCj or BjŪFj or EjŪFj with a demand for P1, P4 Wait State is switched on when SG1 & SG2 run to the end of minimum green (refer to Special Purpose Timesetting No. 11). | |||||||||||||||||||||||||||
| P4 Wait State remains on until Timer 2 (refer Special Purpose Timesetting No. 12) expires. Timer 2 starts timing at the start of SG1 green. Timer 2 is reset at the start of SG1 green (Note Timer 2 should be equal to or less than SG1 minimum green). | |||||||||||||||||||||||||||
| Calculation of ECO | |||||||||||||||||||||||||||
| ECO = Time to travel from the sign to the stopline (200/19.45 m/s = 10) time to travel from the | |||||||||||||||||||||||||||
| nominal stopping distance to the stopline (phase yellow = 4.5) + reaction time, including time to | |||||||||||||||||||||||||||
| travel the viewing distance (1.5s) | |||||||||||||||||||||||||||
| = 10 4.5 + 1.5 | |||||||||||||||||||||||||||
| = 7 | |||||||||||||||||||||||||||