Bicycle helmets in Australia

In Part 15 of the Australian Road Rules. It specifies that ``the rider of a bicycle must wear an approved bicycle helmet securely fitted and fastened on the rider's head, unless the rider is exempt from wearing a bicycle helmet under another law of this jurisdiction.'' The rules also require helmet use by certain bicycle passengers. As of June 2013, the legally-required standard for a bicycle helmet is AS/NZS 2063.

Question: is it illegal to ride a bike without a helmet australia
Answer: yes