Map Viewing Service (WMS) of the dataset: Restricted area of a PPRN on the Department of Meuse (55)

For natural PPRs, the Environmental Code defines two categories of zones (L562-1): risk-exposed areas and areas that are not directly exposed to risks but where measures can be foreseen to avoid exacerbating the risk.
Depending on the hazard level, each area is subject to an enforceable settlement. The regulations generally distinguish three types of zones:
1- ‘Building prohibited areas’, known as ‘red areas’, where the hazard level is high and the general rule is the prohibition on construction;
2- ‘prescribed areas’, known as ‘blue zones’, where the hazard level is average and the projects are subject to requirements adapted to the type of issue;
3- areas not directly exposed to risks but where constructions, works, developments or farms, agricultural, forestry, craft, commercial or industrial could aggravate risks or cause new ones, subject to prohibitions or requirements (cf. Article L562-1 of the Environmental Code). The latter category applies only to natural RPPs.

针对自然风险预防区域（natural PPRs），《环境法典》（Environmental Code）第L562-1条划定了两类分区：风险暴露区域，以及虽未直接面临风险但可通过预先采取措施避免风险加剧的区域。
根据危险等级的不同，每类分区均需遵循可强制执行的管控规则。法规通常将分区划分为以下三类：
1. “禁止建设区”，又称“红色区域”，该区域危险等级较高，通用规则为禁止任何建设活动；
2. “规定管控区”，又称“蓝色区域”，该区域危险等级中等，相关项目需遵循适配风险类型的管控要求；
3. 虽未直接面临风险，但各类建设工程、作业项目、开发活动，以及农业、林业、手工业、商业或工业领域的农场/场所可能加剧既有风险或引发新风险的区域，需遵循相关禁令或管控要求（参见《环境法典》第L562-1条）。此类分区仅适用于自然风险预防区域（natural RPPs）。