We have a dangerous bend out the front of our house. Cars would speed and then slide around the corner (more so in the wet), with several either spinning out or smashing the gutter. One guy broke his rear axle.
The wife and I came home one night to find skid marks that just ended before a tree. It looked as though the car was very lucky in that it stopped just before the tree.
I had enough of it and complained to the council. There is a light on the corner but it's not the best. I didn't particularly want a brighter light or more lights put up so I asked for those yellow and black reflector signs to be put there. The council investigated and agreed to put the signs up. Have only noticed one person spinning out since the council put up a signs and that was during the day. We haven't heard anyone skid/crash during the night.
So, positive for me as no more lighting was put up but bend now safer
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In saying all this, I'm fairly lucky as there are no nearby street lights that interfere with my viewing/imaging. We are on a corner block and I'm surprised there's no light directly on the corner. Hopefully it remains that way otherwise it would be a problem for me.