National Heavy Vehicle Regulator (NHVR) The National Heavy Vehicle Regulator (NHVR) is Australia’s independent regulator for all vehicles over 4.5 tonnes gross vehicle mass. Latest Webform 6.3.0 Becomes First Stable Release for Drupal 11 Bluefly.io Town Hall to Feature Acquia Source and Agentic AI Demo Drupal Association Reserves Fall Below Board Minimum After Two Years of Shortfalls