Speed limits are crazy in this country, totally out of touch with reality most of the time. I am an ass and speed, IMO safely, nearly everywhere. Mostly 10 over, sometimes 20. Most streets I find infuriatingly strangled by hilarious speed limits. major streets...60km/h are you kidding me? Roads that might as well be a highway with nothing but forest and field around them...80km/h. Next time you go out driving, try going under 40km/h. Just try. There are some long residential streets that are 40km/h, with not much but fields turnoffs to subdivisions to break up the monotony. 40km/h is very....very slow. Now, school zones etc. of course should be slow, but those schools should not be on major roads either - THAT is terrible urban planning IMO.
Now, speeding like an idiot in a residential area is obviously quite stupid and dangerous, but don't think for a second that lowering a speed limit of a road is going to magically make it sooooo safe.