Its pretty fuggin simple.
Airfields are built for air commerce and transportation.
They don't let F'heads recreate on runways, they are for planes, and
necessary support vehicles, only. (With rare special exceptions)
Highways are the same.
Business and transportation.
Bikes, even when being used as transportation (which is not the norm),
impede that intended use.
Your mama told you not to play on the road or in traffic.
She was a smart woman, you should listen.
