Siemens ST750 - Far Sided Pedestrian Crossing

ST750 GENERAL HANDBOOK
667/HB/33750/000 Page 34 Issue 6
MIN
Amber
PAR
PBT
3
2
CDY0
Red
Green
Red
R/A
Green
Green
Red
Ped:
Max Change
Gap Change
On-Crossing Detector:
Veh:
IPX
2
CDY1
CMX
Red
R/A
Green
Red
On intersections, the appearance of the vehicle phase will be delayed further if the
IGN intergreen time is larger than PBT plus the red/amber period.
3.1.3 Far Sided Pedestrian Crossing
The vehicle to pedestrian intergreen on a stand-alone crossing is controlled by PAR.
However if the far-sided pedestrian phase is part of an intersection stream, then this
period is controlled solely by the IGN intergreen command.
The pedestrian to vehicle blackout clearance period consists of:
• a minimum period governed by PBT p,
• an extendable period limited to a maximum governed by CMX p,
• a gap clearance delay CDY p 0*, or
• a max clearance delay CDY p 1
where ‘p’ is the pedestrian phase letter.
Following this blackout clearance period, there is a clearance all-red period CRD p.
* The gap clearance delay CDY p 0 is usually set to zero and hence is not shown
on the following diagram.