Four years ago, one of my bicycle mates had a front collision with a car on the way to a ride. Later, I saw the video from the motorist's dashboard cam. It was a miracle he survived. He still suffers from the trauma. Without a helmet, he'd have died on impact. Among cyclists (as
@johnnyG will confirm), helmet-less riders are cynically referred to as ODs (organ donors).
It would be interesting to see the original bill in Japanese.