They still haven't fixed the traffic lights at Don Mills and Eglinton. Almost all the other lights in that immediate area are working (street lamps just west up till Leslie aren't, but other street lamps and traffic lights are).
The things is, it's very hard to treat this intersection as a 4-way stop, because it has 3 lanes of straight-thru traffic in each direction, plus a left-turn lane in each direction, and even a right-turn lane on a couple of sides. That's more than 16 lanes of traffic. Not everyone is pulling up to the stop line at the same time, so it's much more complicated than the single-lane scenario that you would find at an actual 4-way stop sign intersection. Ironically, if it were rush hour, it'd be easier as all three cars would pull up to make their stop at the same time, but when it's less busy, people are arriving to the line at all different times.
The eastbound & westbound cars going straight-thru want to go at the same time, since they don't affect each other, but then when do the left-turn people get to go? Then add to that pedestrians trying to figure out when it's their turn. It's a total mess.
I wonder if traffic lights couldn't be powered by a combination of solar power and electricity and/or back-up battery. The new technology with LED light bulbs means they are supposed to be quite bright and last long while using much less power than regular bulbs or even CFLs. The traffic lights are up high exposed to the solar light all day, they could use that power and maybe store it up as well, like those parking machines with the solar panels on top. And maybe some kind of battery could back them up.