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SITE NAME | PHE BTW LYONS ST & HOOD ST | SITE NO. | 5611
PEDESTRIAN OPERATION
TRAM SITE
1. PEDESTRIAN INTRODUCTION |
The pedestrian cannot introduce in A. |  |  |
The pedestrian can introduce in B if there is no tram call and SG1 & SG2 have gapped or wasted (unless special timers are used - see paragraph below).
The pedestrian can introduce at the start of C provided SG1 & SG2 are in extension and there is no tram call (SG1 & SG2 close down at the start of B yellow). If the pedestrian was demanded prior to C, it will introduce once the tram call has been removed (ie. the tram has departed the stop line loop) or at the last instant of C, whichever comes first. Any pedestrian demand placed during B intergreen or during C will not be serviced until the next cycle.
2. SPECIAL TIMERS |  |  |  |  |
The above describes the normal operation in which the introduction of the pedestrian is delayed by a tram call. In some circumstances however it may be desirable to force on the pedestrian when a tram places a call via an advance detector. This type of operation is achieved by the use of a special timer for each approach, namely timers 3 and 4.
Timer 3 is reset and starts timing at the beginning of B. |  |
While timer 3 is still timing in B, a tram call via detector 6 will delay the pedestrian (as for paragraph 1 above). After timer 3 has expired in B a tram call via detector 6 will force on the pedestrian provided:
| a) the pedestrian demand was placed prior to the tram call |
| b) SG1 and SG2 are in extension |
| c) there are no tram calls via detectors 7, 8 or 9. |
Timer 4 is reset and starts timing at the beginning of B. |
While timer 4 is still timing in B, a tram call via detector 8 will delay the pedestrian (as for paragraph 1 above). After timer 4 has expired in B a tram call via detector 8 will force on the pedestrian provided:
| a) the pedestrian demand was placed prior to the tram call |
| b) SG1 and SG2 are in extension |
| c) there are no tram calls via detectors 6, 7 or 9. |
Timers 3 and 4 each have four timesettings which are selected by the Z flags (refer Tram Priority Operation).
If the value of a timesetting is larger than the length of B, then a tram call will always delay the pedestrian introduction.
3. NOTE |
The operation of D, E, and F are the same as for A, B, and C respectively. |
4. PEDESTRIAN WALK TIME SUBSTITUTION |
When XSF3 (Master & Flexi) is set, P1 uses Special Purpose Timersetting No. 17 for its walk time. |
DESIGNED BY: | [REDACTED] | DATE | 1/07/05
G:\TMC Opsheets\Pending\[5611.htm]Tram Notes 1