Flourescent, on highly frequented streets and crossings sodium. Maybe metal halide is used on the oldfashioned candelabers in the inner city, they are on very high poles and give off an almost white light, so I guess either metal halide or mercury vapor. Typical is a batten with 2 flourescent tubes, hanging from 3 bare wires above the middle of the road. 1 tube is switched off at midnight.
Some time ago in front of our house the tube that remains on all night blew in 2 adjacent fixtures, so it was completely dark.
