The deliberate science behind organising the incident scene to prevent the wedge affect, and to gain an appreciation of the space required to conduct a safe extraction from the crash zone and prepare casualties for transport.

• 有计划的现场管理的实质，是组织、安排突发事件现场以避免堵塞，获得更多空间来引导从危险区域安全撤离和准备转运伤病者。）