In Germany the most common is centrally controlled. Usually a couple streets are connected to a controller, which is either triggered by a signal modulated over

In Germany the most common is centrally controlled. Usually a couple streets are connected to a controller, which is either triggered by a signal modulated over the regular mains from the local power provider or a central sensor, or triggered by a sensor connected to the controller. It's usually not individual lamps, but large streets, blocks, or entire neighborhoods at once.