I think it should be a legal requirement for a cyclist to wear a helmet and fluorescent clothing! As a driver it's illegal not to wear a seatbelt and receive a fine. Cyclists should have the same responsibility. I have been involved in an accident with a cyclist and he unfortunately died. He wasn't wearing a helmet or reflective clothing and had flashing lights.
Maria Sutton,
Cholsey, United Kingdom.
https://www.change.org/p/public-make-it-law-for-a-cyclist-to-wear-a-helmet
http://road.cc/content/news/180161-woman-hit-and-killed-cyclist-%E2%80%93-then-told-police-her-car-had-been-stolen