What would you do?

I live in a small subdivision (two streets that form an 'L') that dumps out into a larger subdivision. I've noticed my neighbor's kids slowly learning to ride their bikes over the years. I barely know this family - the mother doesn't speak very much English, the father speaks more, but I rarely see him. The two boys speak Japanese and English, but never talk to me because I used to have a huge dog that scared them.

So, today, I was walking my not-so-big-and-scary dog outside of our subdivision, and I saw the older son on his bike, riding on the wrong side of the street. If he comes out of our subdivision, he can keep making left turns and get back into the hood, so I understand why he stayed on that side.

The dilemma: do I try to tell him, or his parents, how much safer he would be riding with traffic as opposed to against it? Or, should I just mind my own business?