When I am entering a space I have 360° visibility. I see all, I know all. I can therefore make a calm and practiced motion while being fully aware of my surroundings as I park.

When I am leaving the space my view is inherently restricted. If I am pointing out I can see to both sides, see oncoming and same side traffic, see pedestrians, and see even more as I pull out of the spot.

If I am pulling out in reverse I can see far less. I have a very twisty neck so I can see behind me (180°) plus another maybe 40°, leaving me with an 80° view, but it is from the opposite end of the car space so it is narrowed. As I pull out I see more, but the whole time it is more narrow. I can’t see the rear of vehicle and I certainly can’t see far to either side of the vehicle at the road level.

So I think the key is thinking about your worst visibility. I think the overall visibility is better when I reverse in to the space and drive straight out when compared with driving directly in and reversing out. I think I can see small people and kids better over the bonnet of the car rather than out the rear window and I think I can react better to the situation when I am reversing in than when I am reversing out.