On a standard two-way roadway outside of urban parking bays, on which side and direction must a vehicle be parked?

1. On the right-hand side of the road in the direction of traffic flow, as close to the edge or shoulder as possible
2. On the left-hand side facing opposing traffic to make pulling out easier
3. Diagonally across the centre line to occupy less lane width
4. On whichever side is shaded by trees, regardless of traffic direction