如果路上沒有明顯的界線區分停車區和道路區，警察是會根據law的definition判斷責任。基本上都是開門的人的責任。

• If you have parked off the road or are leaving a parking lot, etc., yield to traffic before reentering the road.

https://www.dmv.ca.gov/portal/dmv/detail/pubs/hdbk/right_of_way#roway

A vehicle entering a roadway from a driveway, alley, private road or any other place that is not a roadway must stop and yield the right of way to traffic on the roadway, and to pedestrians. §1143 and§1151-a

http://www.safeny.ny.gov/roadrule.htm

除非有確實證據表明路上車輛是突然出現或故意撞上來

所有跟帖： 

• 謝謝，希望是對方的錯。小孩開車真讓人擔心！ -meowi- ♀ (0 bytes) () 07/11/2015 postreply 14:31:18

• 沒有錯,這應該是處理事故警官的認定,所以沒有開告發單給駕駛人. -單身老貓- ♂ (0 bytes) () 07/11/2015 postreply 17:26:44