In New Zealand, modified vehicles need to be signed off or "certified" by an engineer. In the 1990s an effort was made to create rules governing the certification of Electric Vehicles but it was never completed and the rules are now quite out of date. The Low Volume Vehicle Technical Association have been updating these rules over the last year or so, addressing a number of shortcomings with the old draft. They are now publicly requesting feedback.
I've already had a hand in the new draft document and I'll be posting my feedback here (and to the LVVTA) in the next few days. If you are building an electric vehicle or thinking of doing so, you should read the draft and submit feedback by the end of the month (8 days!).