How many demerit points do you lose if if doing 58km in a 50 zone in sa?

In South Australia, exceeding the speed limit by 8 km/h to 12 km/h, such as driving 58 km/h in a 50 km/h zone, results in a loss of 1 demerit point. Additionally, you may face a monetary fine for the speeding offense. Always check for the most current regulations, as they can change.