These tram-only lights are meant to light up to indicate when the tram can depart to get a green at the next intersection.
It’s not as good as proper tram traffic light priority of course, but could help tram drivers wait at stops (where passengers can board) rather than at red lights (which is just wasted time for everybody).
The problem is few (or perhaps even none) of them work, despite many having been installed around the CBD.
We’d rather see priority at intersections for trams, but getting these lights working would be better than nothing.
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