Indeed. Very important alert since school zones, specially in Brazil, are commonly disregarded by the drivers.

This I think is a good idea. Just keep in mind it could become a bit spammy (especially in bigger cities). I would still definitely want the variable SLs with it (not just yelling 'school zone' and doing nothing about it), but this would be a good addition.

There has been considerable discussion about getting times/calendars etc in Waze for school zones (and other variable SLs)
I agree with the suggestion that just use a School Zone/warning, similar to the message for high crash hazard area, but we editors indicate the zone eg with a box or an attribute of a segment, and drivers would simply get a warning and popup perhaps like a red light camera alert.
It seems that most of the abilities required for this exist in waze already, just need to adapt to school zone alert.
This would avoid the complications of having to accommodate the myriad of SL/time combinations across Australia.
I also assume the concept could be applied to other alerts eg variable SL roads

This, reminds me. The railway alert is almost always too late, after I've crossed the tracks. Needs to happen well before the tracks.

Reduce speed notification before entering school zones. Something similar to the "approaching a railroad crossing" notification. Many schools are not viable from the road ways which makes it difficult to know you are entering one with enough time to slow properly. This would enhance safety.

Better to update speed limit when there is a school zone since it is always easy to over speed when there is a school zone.

Buenas tardes.

Sugiero que los limites reducido de velocidad para las escuelas, sean establecido 50 metros antes del punto donde se disminuye la velocidad. Esta medida, le dará al conductor Wazer la posibilidad de tomar acciones para prevenir un evento.

Un saludo.