Sales of cycling-specific insurance products have taken off in Japan after a well-publicized court ruling in July 2013 that a mother of a boy who caused a serious accident on his bicycle must pay 95 million yen to the victim.
Even before that ruling I needed liability insurance for being able to participate in randonneuring events, since third party coverage of 100 million yen is required for signup.
I have just renewed my 7/11 bicycle insurance. Prices are:
- JPY 4,160 for single person
- JPY 5,940 for two people (spouses)
- JPY 8,780 for three or more family members
- JPY 100 million personal liability
- JPY 4 million yen for death
- JPY 6,000 per day for hospitalization
You can sign up online. In any case you will need to visit a 7/11 convenience store and use its "Multi Copy" multi-purpose photocopier to complete the signup. It generates a pay slip that you take to the cash register. After paying you get a slip with an "insatsu bango" (printing number) that you then enter into the machine again to print out a contract for your records.
You will also receive the contract in the mail from the insurance company (Mitsui Sumitomo) a few weeks later.
Another option is the AU Sonpo bicycle insurance, which I have no personal experience with.
Besides liability insurance there are also various plans that cover bicycle theft, but that kind of insurance can be relatively expensive and may include conditions that restrict its practical usefulness.