There are many laws governing drivers, riders and pedestrians. Most driving offences in South Australia are covered by the Road Traffic Act 1961 (SA) and in regulations made under this Act, such as the Australian Road Rules 1999 (SA). The Motor Vehicles Act 1959 (SA) regulates (among other things) the issuing of driving licences, the registration of motor vehicles and compulsory third party insurance. A breach of these provisions is also an offence. The offences under this legislation are summary offences. More serious offences (indictable offences) such as causing death or injury by reckless or dangerous driving are contained in the Criminal Law Consolidation Act 1935 (SA).

From 1 December 2023, new speed restrictions apply on beaches - see Speeding for more information.

To see a photograph relating to an expiation / infringement notice of an alleged offence see the SA Police Online Photo Requests Portal.