The police may revoke your driving privileges if you no longer meet the requirements regarding health, driving skills, conduct or sobriety.
You will receive a written decision, and you have the right to appeal if you disagree with it.
Health and Driving Competence
Sobriety and Good Conduct
Police Powers to Suspend Driving LicencesThe police officers are roadside able to provide a suspension notice from the moment an offender is caught drink/drug driving, excessive speeding, or dangerous driving.Police officers may impose a temporary driving ban at the roadside and require the surrender of the driving licence pending further investigation and a formal decision.The final revocation of the driving entitlement is made under the provisions of the Road Traffic Act and may be temporary or permanent, depending on the circumstances and the seriousness of the offence.Legislation, Regulations and Administrative Guidelines