I just checked the "fault determination rules" and in a parking lot:
19. The driver of automobile "A" is 100 per cent at fault and the driver of automobile "B" is not at fault for an incident that occurs,
(a) when automobile "A" is backing up;
(b) when automobile "A" is making a U-turn; or
(c) when the driver of, or a passenger in, automobile "A" opens the automobile door or leaves the door open. R.R.O. 1990, Reg. 668, s. 19.
damn
