Here's a smart comment on the subject...

"The purpose of the police power is to protect public health, safety,
and welfare. When it comes down to cars vs. bicycles, the latter need
greater protection than the former -- after all, cars kill more
Americans than guns do, whereas beds kill more Americans than bikes
do.

Smart except for being completely wrong. The purpose of the police power is
to investigate, apprehend and bring criminals to the judicial portion of the
American system.