Specifications

Adjusting the red timers
Measure the distance between ‘WAIT HERE’ signs, or the ‘WAIT HERE’ sign and datum point,
(see page 7), and use the table below:
Distance (metres) 0 50 100 150 200 250 300
All-Red time (seconds)
5 10 15
20 25 30
NOTE: On some controllers the All-Red switch may be marked in metres and the equipment converts to
seconds automatically.
Method of selection
and values may differ
If the site is on a steep gradient, you may need to increase the indicated
All-Red value for the uphill direction incrementally until vehicles clear safely.
If there are large numbers of slow-moving vehicles that have difficulty in
clearing the works before the lights have changed, increase indicated values
of the relevant All-Red settings incrementally until vehicles clear safely.
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