Rules and tips for oval racing

[Lecram]

6: When racing, try to avoid apron (Inside part of the track, left of the white line)

Why? Is it illegal?

The apron is the lane drivers have to take for pitting. So it's safer to avoid apron at all times and make a habit of that unless you are heading for pit.
It's not entirely illegal because sometimes theres no other way but be aware of pitting or exiting drivers.