I always drive with speed limit in the road especially in crowded area. It's not also a good idea to drive very fast near the schools. In case of emergency calls, I really drive fast just like the movie Fast and Furious. I'm just kidding.
I always try to drive within the speed limit in order to be safe and avoid those nasty fines. Sometimes I like to go faster but that is usually when I am in Germany since they don't have speed limits on the highway there.