Bicyclists are legal and valid users of the roadway. Laws such as speed limits are there to allow safe approach and passing of a bicyclist, and to avoid other things like rocks, debris, wrecked cars that might also be on those curvy roads. You approach fixed objects much faster than a bicycle moving in the same direction.

While you're outlawing bicycles, outlaw tractors, motor homes, motorcycles, horses, motor scooters, and everyone else that can't keep up with your speed. But before you do, enforce the laws that we have.

Passing on double yellow, no, you can't usually pass a bicyclist on a narrow double yellow. You do technically have to wait until the dashed. But on most roads, you can wait 15 seconds and find a safe place to pass a slow moving bicyclist even on an extended double yellow.

Bicycles belong on all roads, other than interstates (which are actually quite good bicycling roads if they were indeed legal! Wide shoulders, wide lanes, slow grades.)