[Sylvanfan]

For a lot of residential streets, I think 40 is about the right number. I'm not in Calgary, but where I live in St.Albert, an unmarked street with cars backing on and off it has the same speed limit as roads with lights and 4 marked lanes. Granted many of our 50 roads should be 60, but aren't. There's also places where you have a playground zone end like 70 meters from a stop sign...so yeah you can go 50 now, but you have to stop right away.

I think it's Europe where they set speed limits based on what 85% of the population drives at. In most residential neighbourhoods I typically would go about 45km/h give or take. In those area's, I usually don't touch the limit. All other roads, my natural tendency is to exceed the limit.

We have two similar roads in St.Albert, one has a limit of 50, the other is 60. My natural reaction is to drive 60 on both of them.