Often wondered why street lights on all night. Wasted energy etc. Also unnecessary pollution where electrcity is generated by coal or other fossil fuel. Could save some small municipalities some cost?
Apparently a German town/city has decided to turn them off.
However provision is made for residents to call a telephone code that will switch them on for a timed period in their area. The call can be made from a home phone or from a mobile/cell phone etc.
So it would appear that a householder could turn them on; as could someone making a late night delivery, a taxi driver looking for certain street etc.