Blue Heelers is a cop show isn't it?
Lots of swearing in Oz. Not really foul stuff but when you arrive at various airports you are greeted with a big ad that says "If you drink and drive, you're a bloody idiot".
Welcome to Australia!
They do have a watershed though:
"On Australian television MA15+ programmes are not allowed to be shown before 9:00 p.m. However, the time difference between New South Wales and Queensland during daylight saving in the former, and the fact that some stations broadcast into southern Queensland from northern New South Wales (specifically the Gold Coast), effectively pushed the watershed time back to 8:30 p.m. Complaints from concerned citizens forced these stations to broadcast as per local time.
AV15+ is a television specific variation of the MA15+ rating indicating the program contains "Adult Violence" and programs given this rating are not allowed to be screened before 9:30 p.m. As such, most MA15+ programs generally begin after 9:30 p.m.
With the exception of subscription narrowcast channels, anything rated R18+ may not be shown on Australian television at any time, and must be edited to fit within MA15+ or AV15+ guidelines.
Subscription narrowcast channels may broadcast R18+ materials, but must ensure that the material is restricted to access by those with appropriate disabling devices.[1]
Since its inception in 1995 Pay TV channel Adults Only has only broadcast from 10:45 p.m. (9:45 p.m. at times) until 4:45 a.m. Although it is advertised until 6:00 a.m., it broadcasts only a test signal in the intervening time. However since the inception of Adults Only Select (a pay-per-view service) in 2004, it has all but eliminated the watershed time"