When reversing into a 90-degree perpendicular (garage) parking bay, what is the key positioning rule?

1. Reverse briskly so you clear the roadway before following traffic reaches the bay entrance
2. Cut in tight and finish diagonally, leaving the driver's door close against the bay wall
3. Line up on the nearest boundary pole and use light contact with it to judge your clearance
4. Take a wide approach, reverse slowly on mirrors and direct checks, and centre the car between the boundary lines without touching the markers