Whenever a person is required under ch. 343 or this chapter to give proof of financial responsibility for the future, such proof may be given by filing:

Terms Used In Wisconsin Statutes 344.30

   (1)   Certification of insurance as provided in s. 344.31; or
   (2)   A bond as provided in s. 344.36; or
   (3)   A certificate of deposit of money or securities as provided in s. 344.37; or
   (4)   A certificate of self-insurance as provided in s. 344.16, supplemented by an agreement by the self-insurer that, with respect to accidents occurring while the certificate is in force, the self-insurer will pay the same amounts that an insurer would have been obligated to pay under a motor vehicle liability policy if it had issued such a policy to such self-insurer.