?? First page;
"Are any bicycles exempt from the requirements?
Yes. Track bicycles designed and intended for use in
competition that have tubular tires, a single crank–towheel
ratio, and no freewheeling feature are exempt.
So are one-of-a-kind bicycles made to the order of an
individual without assembling stock or production
parts."

Damn government, putting regulations on things, for what “safety”? Pffff please.
It’s like when they put a regulation on vehicle manufacturers, making them install seatbelts in every vehicle they roll out of the assemble line.?