Noise mapping: Road Noise Night (LNight)

Noise maps for the main roads. Environmental noise mapping according to the EU Ambient Noise Directive (Directive 2002/49/EC) or the Sixth Part “Noise Reduction Planning” in the Federal Immission Control Act. Calculation rule until the end of 2018: VBus, from 2019: BUB. The LNight noise index is a measure of the average noise exposure in the night hours from 10 p.m. to 6 p.m. The calculated sound levels are grouped into level classes in 5 dB(A) grading. All major roads outside the metropolitan areas must be mapped, i.e. motorways, federal and state roads with a traffic volume of more than 3 million vehicles/year (equivalent to 8200 cars/day). Database: Traffic data of the road construction administration, partly supplemented by information from municipalities.