Towered
Superstar
Don't forget that there needs to be a sufficiently wide buffer to ensure that the bike lane isn't in the door zone from parked cars. As it is, the lane is barely wide enough. Anecdotally, I was biking on Bloor the other day and was barely able to make it around a pickup truck parked next to the bike lane with its passenger side door open. It's also important to have enough space to be able to dodge hazards like glass or sewer grates, and in an ideal world, there'd be enough room for to overtake another person on a bike without going into the car lane. So there are a few reasons you'd want wider lanes, but as @Northern Light mentioned, these lanes aren't even that wide.
I cycle along Bloor frequently and I agree, the lanes are not wide, so I'm not sure what @Amare is on about. You can't even pass slow cyclists, which I find rather frustrating.