When I was driving dpwn the SE LRT route today (28 Avenue to 92 Street), I'm guessing most of the power substations still need to be commissioned. The only one that might be ready is the one at 83 Street/69 Avenue (The train signals are fully functional up to 76 Avenue)..
A bit of terminology nitpicking.
The utility complexes house 2 structures. The traction power substations are used to convert the incoming AC power to 750V DC to feed into the overhead catenary system to power the LRV's, and certainly those are commissioned given that LRV's were running under power earlier in 2021. The other structure would containing any equipment pertaining to the signal system. The signaling equipment would consist of at least any wayside train detection equipment, and possibly as well the logic that operates bar signals that govern train movement at roadway and pedestrian crossings. It's quite possible that since the bar signals that are active right now and mainly govern roadway and pedestrian crossings, could be controlled via the came traffic light controllers at each intersection.
The LRV bar signals seem "dumb". They cycle with the same pattern as the traffic lights.
If they were tied into any train detection equipment, I would almost expect to see the signals remaining in the restricting aspect until a train was within a certain range, at which point the signal would then cycle with traffic lights.
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