I almost for got the running across the road bit. We lived near a busy four lane highway. If your DC is anything like mine going inside RUINS!!! his day. The rule if you go for the road you go inside. I don't play with this rule if I see him at the road he instantly goes inside. The first time I find him at the road he goes inside for 5 minutes. I repeat my expectation after he has calmed down ect and I tell he is allowed to play outside again as long as he stays in the road. The next time I find him on or near the road he goes inside for the rest of the day, until which time I decide he may be able to handle going outside without bolting for the road.
Now what does this mean for me. If I have to do something outside it has to wait. At three I can leave my DS inside alone without much trouble if I need to be outside. When we first moved the first few times outside was just a chance for my DS to learn that I meant he wasn't going near the road. So we went inside A LOT!!! However it does work, it took me about two weeks of going inside nearly every time.