There is no "rule" re: this, it depends on what the evidence/testimony shows about who did what and when (ie: who was negligent). If the car door was open, visible and had been open long enough that the other driver should have seen it and avoided it, it is probably their fault. However, if the door was opened just as the driver was passing the car and they didn't have time to observe or react, then it is probably the door openers fault. Of course, it could be somewhere in between as well - it depends on what facts are shown.
Answered on Sep 16th, 2015 at 4:28 PM