R111-3 de Saint-Michel-les-Portes approved on 30/07/1979

Risk prevention plans (RPPs) are the State’s key instrument for risk prevention. Their objective is to control development in areas at risk. The development of a PPR generates a spatial dataset organised into several data sets. The same PPR includes the spatial datasets containing: — scope of exposure to risks, — restricted areas of the plan once approved. The RPP regulations distinguish between ‘Building prohibited areas’, known as ‘red areas’, where the general rule is the prohibition on construction; ‘required areas’, known as ‘blue zones’ where projects are subject to requirements adapted to the type of issue and hazard, and areas not directly exposed to risks but subject to prohibitions or requirements. The data are informative, only paper documents with the prefecture’s visa are authentic.风险预防规划（Risk Prevention Plans, RPPs）是国家开展风险预防工作的核心工具，其核心目标为管控风险区域内的开发活动。 单份风险预防规划（RPP）的编制将生成一套由多个子数据集组成的空间数据集（spatial dataset）。该份RPP所包含的空间数据集涵盖以下内容： — 风险暴露范围； — 规划获批后的限制区域。RPP相关法规将此类限制区划分为三类：一是“建筑禁止区”，俗称“红色区域”，原则上禁止任何建设活动；二是“管控要求区”，俗称“蓝色区域”，区内项目需根据具体问题类型与灾害类型适配相应管控要求；三是未直接暴露于风险但仍需遵守相关禁止或管控要求的区域。 本数据集所载内容仅为参考信息，唯有加盖府县（prefecture）官方签章的纸质文件方为有效凭证。