Drivers in Perth’s most prolific suburbs for school-zone speeding have repeatedly ignored warnings to slow down, the State Government says.

Figures to be released today reveal Perth’s five worst offending suburbs last year.

Scarborough topped the list, with 1125 school-zone infringements.

Meadow Springs, near Mandurah, again featured with 1017 infringements, putting it second after it topped the list in 2015 with 892.

Gosnells (799), Wembley (669) and Balcatta (619) round out the top five from last year.

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In Scarborough, more than five people were caught speeding in school zones every school day on average.

Road Safety Minister Liza Harvey said continued speeding in school zones came despite almost all schools across the State now having flashing 40km/h signs to warn motorists of the limit.

The signs, funded by the Road Trauma Trust Account, help remind motorists when school was back and when students are arriving and departing campus.

Mrs Harvey said with students back to school this week, motorists needed to pay attention and not put young lives at risk. “These speed limits are in place for a reason,” she said.

“Children can be unpredictable near the road and are extremely vulnerable if hit by a car, so please take care and obey the flashing school-zone signs.”

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Transport Minister Bill Marmion said the $36 million installation of the flashing signs would be completed by the end of the coming school term.

“The remaining schools are either new campuses or waiting on civil and electrical work,” he said.

Road Safety Commissioner Kim Papalia said children returning to school for a new year might be excited, distracted and unaware of the dangers on our roads.

Mr Papalia said the Government had invested in flashing signs to make motorists aware of the 40km/h limit, but ultimately the safety of children was in the hands of drivers.

“Nobody wants to be that person who is responsible for the loss of a young life,” he said.