4. Not leaving the handbrake on.
It is undeniable for people to forget things. And some would say that forgetfulness is a form of freedom.
But one thing you should never forget is to put your handbrake up. You should do this every time you stop to park or go get something real quick.
According to the Australian Road Rules, a driver must apply the parking brake effectively to secure the vehicle and restrain it from moving. By doing this, you help promote safety for other people in the area.