In Bucharest (trolleybuses still run there; that portion of boulevard is called nowday Regina Elizebata and on the uphill side it's going to that avenue with variation of lighting):
http://2.bp.blogspot.com/_yBuaXM1mcZ...iu-Dej1975.jpg Picture is from around 1966-1967. By 1971, those lamps where gone.
Here is an colour picture:
http://i.imgur.com/PcGAdxvl.jpg Same avenue, but uphill. The downhill is a river valley, dug by Dāmobviţa (Dāmbovitza) River, the main river of Bucharest.