David B. 
Your reminder to wear a helmet when you come to the Setouchi Triennale and rent a bike on Naoshima or Teshima.
Kagawa ‘art’ isle struggling to put safety helmets on cycling tourists | The Asahi Shimbun: Breaking News, Japan News and Analysis
NAOSHIMA, Kagawa Prefecture—A serious bicycle accident has raised concerns among local authorities ahead of an international art festival on Naoshima, an island known as the “sanctuary of contemporary art” in the Seto Inland Sea.