With the transition to MASH compliant barriers (AS/NZS 3845.1) at the 1st Jan 2020, the approval status of the public domain Rub Rail systems in most states has been moved to Legacy, meaning no new installs are permitted.
For a fully compliant and approved motorcyclist protection system, please see the Ingal MPR system. This offers Level 1 (highest level) protection for motorcyclists to mitigate the hazards potentially introduced by traditional four wheel vehicle safety barriers.