Paragraph 6 Operation by remote control

The vehicular light signals, pedestrian light signals, indicators for pedestrians, any device for making tactile signals, and any device for emitting audible signals, when they are placed at or near any crossing may also be so designed and constructed that they can by remote control be made to operate–

(a)

as if a push button has been pressed; and

(b)

so that the pressing of a push button has no effect, other than causing the word “WAIT” in each of the indicators for the pedestrians to be illuminated, until normal operation is resumed.