When parking on an incline (uphill or downhill) on a road WITHOUT a kerb, what is the correct wheel positioning?

1. Turn the front wheels towards the center of the road to block oncoming vehicles
2. Keep the wheels parallel to the center dividing line without engaging gears
3. Angle the wheels at exactly 90 degrees across both traffic lanes
4. Turn the front wheels towards the right-hand edge/shoulder of the road so the vehicle would roll off the road rather than into traffic