이 름 전자우편 홈페이지 제목 비밀번호 (최소 4자이상의 영문 또는 숫자) That is true, but clearly there is something about motorcycling that elicits a more visceral response. Horseback riding is more dangerous on a per-mile basis, but there is never any huge public outcry about horseback riding! In fact, per “Super-freakonomics”, drunk walking is more dangerous on a per-mile basis than drunk driving.