SCHOOL zone speed limits will return across the Hawkesbury on Tuesday, January 29.
Watch out for the 40km/h speed limit signs at schools around the district.
Back in force Tuesday.
Most students go back to school on Wednesday, January 30, however Tuesday is a school development day at some schools and teachers and some students may attend school on this day.
School zone flashing lights warn motorists when they enter a 40km/h school zone.
They come into effect at designated times in the morning and afternoon on school days.
This lower speed limit reduces the risk and potential severity of a crash.
