In Europe, the acceptance of the railways as a driving force for the development economic and ecological it is subject at the rail noise reduction, aspect important for people's health and the environment. The acceptance of the noise for the citizens, living in the vicinity of railway lines, is of vital importance in view of the increasing number of trains and consequently of the noise they produce. Therefore, measures to reduce the noise levels are essential to prevent health risks in the citizens exposed. Health effects due to prolonged exposure to environmental noise, rarely can cause directly damage to hearing (hearing loss). Many damages psychosomatic, can affect the apparatus: digestive, respiratory, visual, reproductive, skin and circulatory systems and blood. Precisely for these reasons, in recent decades the actions of assessment and reduction of noise, coming from the civil engineering infrastructure, have become of paramount importance and cannot longer be neglected. The aim of this study is the evaluation of noise emission coming from a railway yard inserted in an urban context, and the acoustic environment in the surrounding area and the possible presence of sources concomitants in the railway area. The work presented here is part of a larger project aimed at developing a 3-D numerical model of the survey area, to be used for the noise-mapping of the area in the existing situation, both for the simulation of future order, resulting after the inclusion of noise abatement systems aimed at reducing noise pollution.