The fun of running in the dark

Encounter on this morning's run: A dude on his bike was coming down the middle of the sidewalk straight towards me and did not see me at all. About 10 feet out, I pointed my blue headlight at his face. He finally saw me when I was about 5 feet away. The next thing I heard was a blood curdling scream "WHOAAHHHH!!! Sorry!!" his feet hit the ground and his bike almost fell over as he went off the opposite side of the sidewalk. So today's question was "It's 6 AM, do you know where you are?"