Specifications

ST900 Family General Handbook
667/HB/32900/000 Issue 10 Page 104 of 265
time that the vehicle phase terminates. In this instance, the next phases starting
would be controlled by the vehicle-to-vehicle inter-greens, rather than those defined
for the pedestrian.
6.11.7 Non-Conflicting Vehicle Phases
If a vehicle phase which is gaining right-of-way after the pedestrian phase
terminates does not conflict with it, the vehicle phase will appear as soon as any
inter-greens from vehicle phases running in parallel with the pedestrian phase to the
vehicle phase gaining right of way have expired.
Thus, IGN effectively switches on the ped clearance delays, in the sense that if IGN
from the pedestrian to a vehicle phase has been configured as “non-conflicting”, the
ped clearance times will have no effect on the appearance of that vehicle phase.
Where the pedestrian clearance is required to delay the appearance of any non-
conflicting phases, an all-red extension unit could be configured, with the extension
input defined as the ped phase ‘changing to no-right-of-way’ condition.