Why the gears sequence in automatic transmission cars is almost always PRND?

Question

And why R is before D, making the driver behind you think you are backing up?

In: 18

Answer 1

In the early days of automatic transmissions reverse was the last position or at the bottom. It was changed due to a government regulation.

https://www.curbsideclassic.com/automotive-histories/automotive-history-the-mysterious-disappearance-of-the-chrysler-pushbutton-automatic-a-government-conspiracy/