![Pic_0304_762.jpg](https://groups.google.com/group/aussie-highways/attach/32756ead38d39/Pic_0304_762.jpg?part=0.1&view=1)
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.