Traffic noise zones in Helsinki metropolitan area

The data includes traffic noise zones in the Helsinki metropolitan area (Helsinki, Espoo, Vantaa and Kauniainen). The dataset contains a breakdown of road and rail traffic noise zones, as well as day and night times. The coordinate system of the dataset is ETRS-TM35FIN. The noise calculations were carried out at a power workstation specifically purchased for the noise calculations. The calculations took place between November 2011 and January 2012. The calculation times for all situations ranged from 8 to 12 days. The calculation time Depended on the number of details in the city’s noise model and the city’s surface area. More detailed information on, for example, the calculation method and noise indicators can be found in the PDF file [Noise mapping for the Helsinki Metropolitan Area in accordance with the environmental noise directive]. For more information on the key figures, see page 7.