So there have been flashing lights installed at selected schools.

But what is the rule for installation of school zone signs?

Do school zones start say, at exactly 100 meters from the school, if so, do signs have to go there no matter what, even though by placing the sign a few meters further, or closer would greatly help visibility?

King Georges and Moorfields Rd Beverly hills.

Wouldn't placing the sign a few meters further be better?

This rather sad one is on Rocky Pt Rd Kogarah, heading North towards the the twin camera school zone behind the pole and N.B. no flashing lights.

The Rocky Pt Rd traffic goes through to the twin camera School zone.

If you install a flashing light set, is the rule that it has to be on the left hand side of the road, even if its obscured by tree's or poles or the bend in the road.

Heading towards the Princes Hwy on King Geoges Rd this FL set is hidden by the bend, while the plain school zone sign on the middle divider is highly visible a lot further back.

The flashing light sets (I've seen so far) are all solar powered, so why can't they go on the centre sign in this case?

Hullo! solar means that there's no wires to worry about.

Or would putting the flashers on the middle sign be too sensible?

Here's another one hidden by the bend at Taren pt. rd Taren Pt

The offical reason given for only putting flashing lights on the left is because they might distract a driver, who could fail to see a child on the left.

Then why have signs in the middle at all?
So here you are drivig at 70kmh and you come around the bend and it's,
"Hey it's school zone time, look out you cars behind, I'm slamming on the brakes."
Put the lights on the centre sign and there's a lot more warning.

UPDATE: The RTA have moved the flashing lights to the very visible centre sign.
Wasn't so hard was it?

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This one with the young trees in front (which will only grow bigger), hide this even more expensive flashing light set, and on the road divider is, you guessed it, another sign, highly visible from way up the road.( even back as far as Park St.)
A close up of this sign is a couple of pages back

What can I say.

UPDATE: on the young trees obscuring the very expensive flashing lights.(above)

In their wisdom they have since cut down the trees put there to enhance the streetscape in front of the new unit block...well done RTA,

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On President Ave Kogarah going up to the Princes Hwy and the twin camera school zone is this sign, without flashing lights, but does have the usual tree.

Thousands of cars come up from the city this way and no flashing lights for them?

Why is it so?