Small PE cells atop sign posts in Sydney?

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James Bowie

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Mar 3, 2024, 11:40:06 PMMar 3
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In Sydney I've started to notice these post-top fittings which appear, from the ground, to be small photo-electric cells. Anyone know what they are for? There are no parking sensors that I can find, and the parking notices are traditional printed signs, not electronic.
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