Map visualisation service (WMS) of the dataset: Restricted zones of PPRN GRAND LYON: LYON VILLEURBANNE

For natural PPRs, the environmental code defines two categories of zones (L562-1): risk-exposed areas and areas which are not directly exposed to risks but on which measures may be foreseen to avoid exacerbating the risk.Depending on the level of hazard, each area shall be subject to an enforceable settlement. The regulations generally distinguish between three types of zones:1- the so-called “red zones” where the hazard level is strong and the general rule is the construction ban;2- “prescription zones”, known as “blue zones”, when the hazard level is average and projects are subject to requirements adapted to the type of issue; 3- areas not directly exposed to risks but where constructions, structures, development or agricultural, forestry, artisanal, commercial or industrial activities could exacerbate or cause new risks, subject to prohibitions or requirements (cf. Article L562-1 of the Environmental Code). The latter category applies only to natural PPRs.

针对自然PPRs（natural PPRs），《环境法典》划定两类区域（第L562-1条）：风险暴露区，以及未直接面临风险但需采取防控措施以规避风险加剧的区域。依据危险等级，每类区域均需落实可执行的区划管控要求。法规通常将区域划分为三类：1. 所谓"红色管控区"：危险等级较高，通用管控规则为禁止建设；2. "规制管控区"，又称"蓝色管控区"：危险等级中等，项目需符合适配问题类型的管控要求；3. 未直接面临风险，但建设、构筑物、开发活动或农业、林业、手工业、商业、工业活动可能加剧风险或引发新风险的区域，需遵守禁令或管控要求（参见《环境法典》第L562-1条）。该类区域仅适用于自然PPRs。