Let's begin with a little snip of some racing rules:
O-1: To obtain right of road position in a corner, the overtaker's car must have substantial overlap of the car that is being overtaken, before they reach the corner's turn-in point. Should the overtaking car not have enough overlap, the leading car may resume its racing line without fear of contact.
This is a very important agreement for both opponents, but I am left with a question here:
Without at least a 180° FoV triple screen setup or some oculus rift - how should anybody be able to judge this? Many of us are really struggeling with this. - clean - racers want to race as close and fair as possible. You may shout "simcarde!" now, but this might be a little helper for us.
What is this app?
Just a little radar of an aerial perspective, so you can see what's going on around your car:
You can't see the red abarth to the right, or even judge where exactly he is - nor if he "earned his position due to substantial overlap".
Blue Flag Implementation