Many accidents can be avoided by following Grand Prix Open wheel etiquette.
If Driver A has the ability to pull up next to Driver B, coming off of the same corner or straight-away, then Driver B is required to give Driver A proper "racing room" in the next corner.
(This assumes Driver A has the ability to hold his "position" approaching the next corner.)
(pic below) In Karting, this position is earned when the wheels of driver A are able to pull up next to an imaginery line intersecting the position of the steering wheel in Kart B.
RIGHT = NO Black Flag
(pic below) Driver A earns position by ability to pull up next to (front tyres across from steering wheel) of kart B.
Kart B allows proper racing room in corner.
WRONG = you will receive a Black Flag
(Pic below) Driver B denied Driver A racing room in corner, even though front wheels of A were past steering wheel of B. Because kart B did not leave enough asphalt for both tyres of A, kart B gets Black Flagged.
RIGHT = NO Black Flag
Should Kart A intentionally contact Kart B at this point, Kart A would be in violation
(Pic below) Driver A does NOT earn position (by ability to pull up next to front tyres across from steering wheel) of kart B, kart B denies proper racing room in corner and is legal.