Now you see me, now you don't

[Moonshot_1]

Was directed to this site. It's a demonstration of how your vision is limited. Called "motion induced blindness" it would explain why motorcycles aren't seen by others in traffic.

http://www.msf-usa.org/motion.html

It's pretty enlightening.
You wonder how people can not see a motorcycle. This is probably one reason.


Another site of interest from the MSF

http://www.msf-usa.org/riderperception/