Vital Area Regulations Article 3
Unless otherwise specified, land areas and territorial waters within the vital area are classified as either Zone One or Zone Two. Airspace within vital areas is classified as either a No-Flight Zone or a Restricted Flight Zone. Depending on its geographic, transportational as well as local residential considerations, the specifications of the above regions are defined as follows:Subparagraph 1 The area within a radius of approximately four to six hundred meters from the baseline perimeter is defined as Zone One.Subparagraph 2 Within the range of approximately three to four thousand meters surrounding the area of Zone One is defined as Zone Two.Subparagraph 3 The airspace within which no aircraft is permitted is defined as a No-Flight Zone. The airspace within which only permitted flights are allowed is defined as a Restricted Flight Zone. The rules and restrictions of the above two zones are to be specified by the Department of Defense, if necessary, accompanied by topographic maps illustrating a detailed outline of the stated area.The above stated zones as they apply to military ports, strategically important ports, naval defense facilities, airports, air force defense facilities and any defense related areas are to be defined and posted by the Department of Defense.
中文原文 要塞堡壘地帶法第3條
要塞堡壘地帶除有特別規定者外，陸地及水面均分為第一、第二兩區，天空則分為禁航與限航兩區，依地形交通及居民狀況規定如左：
一、自基點或基線起至外方約四百至六百公尺以內為第一區。
二、自第一區界線起至外方約三千至四千公尺以內為第二區。
三、禁止航空器飛越地帶之上空為禁航區，限制航空器飛越地帶之上空為限航區，在此區域內其禁航與限航之限制，得由國防部逐一加以規定，必要時並附以地形地圖，詳確繪明其區域。
前項所列各區及其與軍港、要港、海軍防禦建築物、飛機場、空軍防禦建築物等相關連之區域，均由國防部核定並公告之。
一、自基點或基線起至外方約四百至六百公尺以內為第一區。
二、自第一區界線起至外方約三千至四千公尺以內為第二區。
三、禁止航空器飛越地帶之上空為禁航區，限制航空器飛越地帶之上空為限航區，在此區域內其禁航與限航之限制，得由國防部逐一加以規定，必要時並附以地形地圖，詳確繪明其區域。
前項所列各區及其與軍港、要港、海軍防禦建築物、飛機場、空軍防禦建築物等相關連之區域，均由國防部核定並公告之。