i’m not sure where you grew up and live, but as someone who grew up in a very large city (10m+), i can tell you that children aren’t stupid, if they grow up in an environment in which they’re given an appropriate amount of responsibility in the face of danger, while also explained the possibilities of danger and how to avoid it, they grow up to be pretty responsible, and certainly wouldn’t be endangered (or really bothered in any way) by something as trivial as grassy tram tracks