Opponents car detection at rear and sides

I know this has been asked before but wanted to add to the request. Is it possible to add a rear, left and right proximity light in the Arduino code or can this be done in simhub as it stands, as I see it all that would need to be done is add code to simhub to enable arduino output pins (to turn on a lights) when another car is detected in close proximity to the rear, left or right of your car?

Also output pins for race flag indicator lights or use a colour screen to display in letters and colour the background in the flag colour.