Paragraph 6
There shall be a primary control point on each rail approach to the Village Circle so located that there is a clear view of all the crosings from each. Each primary control point shall have a key operated main switch to energise the control point and switches to:
(a)
initiate the special phase of the road traffic light signal controller — the “initiate” switch; and
(b)
release the special phase of the road traffic light signal controller — the “cancel” switch.