I used to drive to Toronto every day, usually down University Ave, but sometimes down Bay St. I can tell you for free that traffic got much worse on University as a result of those bike lanes.
The destinations argument doesn't really work, since you can easily bike on the road for a short distance to get to where you're going, or have a short walk.
I'm an Ontarian driver. I hate speed traps, and I will purposely go out of my way to avoid them, or otherwise figure out exactly where the device is so that I can slow down for it.
I'm sorry, but for all the folks that want us to drive 40 everywhere in "community safety zones"... you're living in dreamland. We all have places to be.
Have barriers and well-designed crossings. Fast cars can't hurt pedestrians if they aren't on the road to begin with.