That's just traditional design failure. A well-designed road network has higher-speed through roads and lower-speed local roads - and a school (serving the loca

That's just traditional design failure. A well-designed road network has higher-speed through roads and lower-speed local roads - and a school (serving the local neighbourhood) has zero business being near a through road. And to make it a two-for-one special: roads shouldn't need speed signs to begin with. The road should be designed for a certain speed, so that driving any faster feels uncomfortable and unsafe. If it is physically possible to drive 80 in a 30, something has gone terribly wrong already. Roundabouts are a great addition to this: you can't exactly speed through them, so you are forced to slow down.