BHT - portapack-mayhem/mayhem-firmware GitHub Wiki
This is an App ( in French) allows some control over street lights. The system is manufacture by BH-Technologies for many French municipalities. It provides a system to turn on/off streetlights via a radio signal in the 31~32MHz, only works in France. Some information on BHT system is available on their publicly available commercial brochures here.
Xy/EP is a Remote streetlight management protocol only seen in some European cities.