Originally Posted by
Retro Grouch
How is that any different than NASCAR or formula 1?
Exactly. Or RAAM vs. UCI vs. whatever the international triathlon governing body is. Different organizations can have whatever rules that they deem fit, including what design of bike that they use.
As a long time recumbent rider (15 years), I'm often amazed that this is even a topic except to breed animosity between recumbentists and upright riders who really don't care until goaded into it.