Originally Posted by
njkayaker
"Bicyclist on bridge when flashing"?
How does that work?
I too am curious. This
link indicates it is some kind of automatic sensor, but doesn't describe how it works.
"They come with an automatic sensor, which means the lights would flash without someone on a bike having to stop and push a button."
Maybe speed sensor if it detects relatively slow motion (it is a 60mph road)? The only other possibility I can think of is some kind of optical recognition system, but I would think that would be very expensive and not terribly reliable.