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Abstract: This paper presents 1 year of working on creating the acoustical and conflict maps for Braila – the 11th city in size in Romania. These maps show the noise and the conflict made by the road traffic, railway traffic (trams included) and industry. In order to complete these maps all the factors were taken into account: the GIS system, the statistical data which refer to the demographic structure of the city (areas, neighbourhoods, streets) given by the City Hall, data obtained from the public transport company and from the railway company, data obtained from the industrial companies, weather conditions (dry roadway, T=10-22°C, gentle wind), etc. both noise maps as well as conflict maps were created for a 4m height, according to the standards. The experimental measurements were made using the Blue Solo - 01DB Metravib sound level meter. The software used was CadnaA (Computer Aided Noise Abatement)-DataKustic (software for calculation, presentation, assessment and prediction of environmental noise).
The obtained results were alarming, especially those referring to the historical city centre (50-60dB), to the main city streets (60-75dB) and to some of the neighbourhoods (> 75dB). Similar results were obtained in the night time measurements (the same main city streets have noise problems). The conflict maps were drawn in order to solve these problems and in order to identify the conflict areas and the on these maps were identified the areas for which the legal limits are exceeded, including Lden>70dB(A) and Ln>60dB(A), according to the standards. The preliminary data obtained after each conflict map was completed show that:
• During the night there is a conflict of: 0-5 dB for the buildings situated at a distance of 32-55 m from the road; 5-10 dB for the buildings situated at a distance of 15-32 m from the road; higher than 10 dB for the buildings situated at a distance under 15 m from the road.