Graham Murray wrote:

Arthur Figgis writes:

Presumably the road and tram signals are interlinked in some way, to
avoid a tram being sent into the path of cars, or vice versa.

On the other hand, where a tram is running along a road, is there any
need for it to have separate signals? Would it not suffice for it to
have to obey the same red/amber/green traffic lights as other traffic?

One can imagine good reasons for there being a separate signal for the
tram, including the phasing of tram signals being different and,
especially in situations where there are multiple lanes of traffic, the
need to give a signal that applies to the tram but not to traffic.

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http://gallery120232.fotopic.net/p9632899.html
(33 119 at Eastleigh, 15 May 1985)