Dataset Direct Download Service (WFS): PPRN from Villette-sur-Ain

For natural RPPs, the Environmental Code defines two categories of areas (L562-1): risk-prone areas and areas that are not directly exposed to risks but on which measures may be provided for avoid increasing the risk. Depending on the hazard level, each area is subject to a enforceable regulation. The regulations generally distinguish three types of zones: 1- “Building prohibited areas”, so-called “red zones”, when the level of D’aléa is strong and that the general rule is the prohibition on construction; 2- “areas” subject to requirements, referred to as ‘blue zones’, where the hazard level is average and that projects are subject to requirements adapted to the type of issue; 3- Areas not directly exposed to risks, but where constructions, works, development or agricultural, forestry, artisanal, commercial or industrials could aggravate risks or cause new, submitted prohibitions or prescriptions (cf. Article L562-1 of the Environmental Code). This last category applies only to natural RPPs.针对自然风险防护规划（Natural RPPs），《环境法典》（第L562-1条）划定了两类区域：易受风险影响区域，以及虽未直接暴露于风险之中，但可采取相关措施以避免风险加剧的区域。根据危险等级的不同，每类区域均需遵守相应的强制性监管规则。上述监管规则通常将区域划分为三类： 1. 禁止建设区（又称"红区"）：当危险等级较高时，通用规则为禁止开展任何建设活动； 2. 受约束建设区（又称"蓝区"）：此类区域危险等级为中等，建设项目需符合适配风险类型的相关要求； 3. 非直接风险暴露区：此类区域虽未直接暴露于风险之中，但任何建设、工程、开发活动或农业、林业、手工业、商业、工业行为均可能加剧既有风险或引发新的风险，因此同样需遵守相关禁止性规定或约束性要求（详见《环境法典》第L562-1条）。 上述第三类区域仅适用于自然风险防护规划场景。