I know this is a shot in the dark, and could be even a DIY - but I don't think it is. On most commute mornings, I see a cyclist making a right hand turn in front of me going the same direction. However, I turn down the street he's turning off of so I never have the chance to say hello, or what's that light!?
Describing the light -
It's a vertical, tail light. Not really strobe, but more of a "Knight Rider" type. Where a series of red LED's move up and down vertically. I think there are 3 LED's on each level, and may be 3 levels on the light.
If you picture the Knight Rider car with the front LED's moving back and forth left to right, instead this goes up and down.
On the off chance the cyclist is on these forums - I see him turn right off of Fetzner Rd, to English Rd in Rochester, NY suburb of Greece around 6 AM.
Thanks for any help!