RESIDENTS of Cecil Avenue, Castle Hill, are appalled by a decision to install rumble bars down the centre of their road.

The residents believe parking banned on one side of the road, from the Orange Grove roundabout to the Castle Hill Adventist School, should be implemented immediately instead.

They believe this will help to prevent head-on collisions like an accident that occurred last Tuesday morning.

Residents first approached The Hills Shire Council in February with concerns about the narrow bend in the road, where motorists regularly drove over the line markings to the wrong side of the street.

They said this problem was compounded by school visitors parking on both sides of the road, making it dangerous for two lanes of traffic to move in either direction without crossing the centre line.

The council's local traffic committee voted to install 100metres of rumble bars from the Orange Grove roundabout to the curve in the road near the school.

The council will also enforce a No Parking zone outside the school and extend it 10metres towards the roundabout.

But residents say this will shift congestion down the road.

Pat Boody has painted white lines outside his house to stop cars parking across his driveway.

``At busy times, I can't exit our driveway without crossing over the centre line,'' Mr Boody said.

``Rumble bars are noisy and trucks will still need to cross over them.

``Parking needs to be banned on one side of the road to make it safer.

``When going around the curve in the road it's quite natural to stray over the centreline, particularly when there is a car parked on the corner, but even when there isn't.''

Mum Marisa Giorgi agreed.

``The road is not wide enough for two cars to pass in either direction, and there's no way they'd be able to avoid each other,'' Mrs Giorgi said. ``At one point on the bend it's a blind corner.''