> All drivers in the whole neighborhood understood this as normal.

But the fact remains that kids get hit in suburbs more often. We feel like drivers in suburbia understand this, but the roads are actually designed to encourage speed, and accidents happen.

Yeah that neighborhood was impossible to speed like today's suburbs. Blocks were 300 ft from intersection to intersection, and no road was longer than 3 blocks. Going to my house from the main road was literally: "First left, then first right, then second left, then first right, then the third house on the left".

I did some OpenStreetMap work recently with aerial imagery in the US in such a suburb and was a bit surprised to see that the streets where people lived (not arterial roads through the suburb) were about 10 m wide. I feel the residential streets here with 5.5 m are already a bit too wide, and the main road through the village (with bus traffic and until recently lots of traffic to the motorway) is about 7 m wide.

That people tend to speed when you build a road as if it were a 100 km/h rural road doesn't seem too surprising, sadly. Now, as a parent I still think people are driving too fast, especially around the kindergarten (30 km/h speed limit doesn't automatically make that the desired default speed for that street), but it's probably night and day compared to American suburbs.