Noise mapping road after T-1442

This service contains Noise Warning maps after T-1442. Noise warning maps have been prepared in accordance with the Guidelines for the treatment of noise in area planning (T-1442). Noise warning maps show calculated red (Lden> 65 dB) and yellow (Lden> 55 dB) noise zone along national and county roads. The noise warning maps from the Norwegian Public Roads Administration show a forecast situation 15-20 years ahead. That is, traffic volume (ÅDT), which is one of the most important parameters in the noise calculation model, is projected (based on forecasts) to the given calculation year. The calculation height is 4 meters. The mapping has been carried out using the Norwegian Public Roads Administration’s calculation tool NorStøy. The calculation method is Nord2000Road. Data on roads and traffic are collected from the National Road Databank (NVDB). The main parameters are ODT, heavy traffic share and speed. Map data is obtained from the common map database (FKB). Information about buildings is collected from the matricle.