Map Viewing Service (WMS) of the dataset: Noise Zones (Type B Map) of the RN98, unlicensed national road network

European Directive 2002/49/EC of 25 June 2002 on the assessment and management of environmental noise entails for EU Member States an assessment of environmental noise in the vicinity of major transport infrastructure (land and air) and in large agglomerations. This assessment is carried out in particular through the development of ‘so-called’ noise maps, the first series of which were drawn up in 2007 (1st deadline of the Directive) and 2012 (2nd deadline). Article L572-5 of the Environmental Code states that these maps are “reviewed, and if necessary revised, at least every five years”. Thus, the implementation of this review leads, in 2017 and as appropriate, to revise or renew the maps previously developed. Strategic Noise Maps (CBS) are designed to allow for the overall assessment of exposure to noise and to forecast its evolution. CBS are required in particular for road infrastructure with annual traffic of more than 3 million vehicles per year. For major road and rail transport infrastructure, the CBS are established, decided and approved under the authority of the prefect of the department. Noise maps are developed according to the indicators established by the European Directive, namely Lden (Day Evening Night Level) and Ln (Night Level). • Day/day: [6h-18h] • Evening/evening: [18h-22h] • Night/night: [22h-6h] The Lden and Ln indicators correspond to a defined energy average over the periods (Day/Black/Night) for Lden and (Night) for Ln. The corresponding results are expressed in A or dB(A) weighted decibels. Type B maps correspond to the areas affected by noise in accordance with the noise classification of land transport infrastructure which has been drawn up and adopted by the Prefect pursuant to Article L571-10 of the Environmental Code. This classification defines, for future residential, educational, health and hotel buildings located in these areas affected by noise, a minimum sound isolation of buildings. These requirements are laid down in the Decree of 30 May 1996 as amended by Decree of 23 July 2013.2002年6月25日发布的《欧盟关于环境噪声评估与管理的2002/49/EC号指令》（European Directive 2002/49/EC）要求欧盟成员国对主要交通基础设施（陆地与航空）周边及大型聚居区的环境噪声开展评估。 该评估主要通过绘制“所谓”噪声地图完成，首批噪声地图分别于2007年（指令首个截止期限）与2012年（第二个截止期限）编制完成。 《环境法典》第L572-5条规定，此类地图“至少每五年进行一次复核，必要时予以修订”。 因此，2017年及后续适宜时机开展的复核工作，将对此前编制的噪声地图进行修订或更新。 战略噪声地图（Strategic Noise Maps, CBS）旨在实现噪声暴露的整体评估，并对其发展趋势进行预测。 战略噪声地图尤其适用于年车流量超过300万辆的道路基础设施。 针对大型公路与铁路交通基础设施，战略噪声地图的编制、审定与核准工作，由所在省省长主管开展。 噪声地图的编制需遵循欧盟指令规定的指标，即昼夜等效声级（Lden, Day Evening Night Level）与夜间等效声级（Ln, Night Level）。 • 日间时段：[6时至18时] • 傍晚时段：[18时至22时] • 夜间时段：[22时至次日6时] Lden与Ln指标分别对应日间/傍晚/夜间时段（针对Lden）以及夜间时段（针对Ln）内的规定能量平均值，计算结果以A计权分贝（dB(A)）或A声级表示。 B类噪声地图对应依据《环境法典》第L571-10条由省省长制定并核准的陆地交通基础设施噪声分类所覆盖的受噪声影响区域。 该分类为位于此类受噪声影响区域内的未来住宅、教育、医疗及酒店建筑规定了最低建筑隔声要求。 上述要求载于经2013年7月23日法令修订的1996年5月30日法令之中。