...my refusal to wear a helmet is informed
Sue,I think you should read this:http://www.legislation.nsw.gov.au/viewtop/inforce/act+99+1996+cd+0+NSection 17, 1, c definitely applies to you given that there is an error in the penalty notice ($67 vs $64). I think the mechanism for getting this looked at is the SDRO review process (on their website), it costs $50 to submit a review.You might also consider section 123; it seems you can also appeal to the Governor for mercy, as they have the power to have your fine cancelled.
Great-stuff!! - thanks for that, Dan!
c) Sept 2010 Letter to NSW Minister for Roads
d) Submission to Parliamentary Inquiry into Vulnerable Road Users 2010