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瑞士1987年实施的防噪声法规定了既有铁路的线路噪声最高值。今后15年,瑞士联邦铁路的近800km路段(约占全部路网的20％)将采取防噪声措施,总投资可达数亿瑞士法郎。铁路防噪声主要从两个方面采取措施:一是改进机车车辆结构,减少噪声传播;二是在线路两侧修建植被隔音壁和普通直立式防噪声墙。瑞士联邦铁路新研制的防噪声墙其上部向线路倾
The anti-noise law implemented by Switzerland in 1987 stipulated the maximum line noise of an existing railway. In the next 15 years, nearly 800km of the Swiss Federal Railways (about 20% of the total road network) will take anti-noise measures with a total investment of hundreds of millions of Swiss francs. The anti-noise of railway mainly takes measures from two aspects: one is to improve the structure of rolling stock and reduce the noise transmission; the other is to construct the vegetation soundproof wall and ordinary upright anti-noise wall on both sides of the line. The newly developed anti-noise wall on the Swiss Federal Railways slopes towards the line