You left out the most important step: make sure kids understand the reason for those rules (other than "because I say so"). Speaking from my experience with my parents, yours is a great recipe for having your kids think you're an asshole when they're older.
I don't think my parents are assholes. Sure, I did when I was a teenager, but that's because I was egocentric and had poor impulse control - in short, a teenager. Thank god my parents were doing their job instead of trying to be my buddy.
Funnily enough, my 2 year old understands exactly why she shouldn't play in the street; Every time we go for a walk around the block and a car passes us, she tells us all "look out for that car, it might hit us!".
And then again, I know plenty of other 2 year olds who can barely talk, let alone say something like that.
And then I know 2 year olds who have dexterity and body awareness that makes my daughter look like she's walking around with a blindfold and her arms tied together.
If being a parent has taught me anything, it's that kids are just incredibly different from each other. Oh, that, and that nothing good can ever come of a parenting thread on Hacker News ;) So many strongly held opinions from such small samples (often zero!).
