Noise MappingNoise Exposure Calculation and Action Planning in compliance with EU Directive 2002/49/EC for major agglomerations (including industrial sites and ports), major roads and railways and major airports

Calculation Methods

IMMI fully supports the requirements of Directive 2002/49/EC for interim and national computation methods. All 4 interim computation methods, including the adaptations described in Recommendation 2003/613/EC are available in IMMI. In total, more than 20 national computation methods are disposable in IMMI.

According to Directive 2002/49/EC the following calculation methods are recommended:

  • NMPB/XP S 31-133 + Guide du Bruit (1980) – interim computation method for road traffic noise
  • SRM II – interim computation method for railway noise
  • ISO 9613-2 – interim computation methods for industrial noise
  • ECAC.CEAC Doc. 29 (1997) with segmentation technique – interim computation method for aircraft noise
  • Furthermore, Member States may use their own national computation methods. In that case equivalence with the interim methods must be shown.

Calculation of strategic noise maps

Noise Mapping

IMMI calculates all four noise indicators simultaneously:  LDayLEveningLNight and LDEN. The grid cell size may be defined by the user. Typically it would be 10 m by 10 m. The calculation heigth is 4 m above the ground in compliance with the requirements of the Directive. In addition, the height of 1,5 m that is also referenced in the Directive or any other height that may be requested by your national transposition can be defined by the user.

In IMMI noise indicators are calculated separately for each type of noise source. Furthermore, IMMI enables the user to calculate global noise level maps (i.e. by energetic addition of the the noise maps calculated separately for each source).

Noise Exposure Calculation

IMMI features all requested noise exposure calculations of land-size area, dwellings and population.

The strategic noise map is both the basis for the calculation of the land-area exposed to certain noise level bands and the definition of the noise exposure bands according to ANNEX VI of the Directive.

In IMMI each building can carry a series of attributes such as non-residential, residential, school, hospital and kindergarten. The "residential" attribute identifies buildings for which both the number of people and the number of dwellings exposed to certain noise levels are calculated. The attributes "school", "hospital" and "kindergarten" identify sensitive buildings. The number of buildings per noise level band is counted for these attributes.

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Your Personal Contacts

Dipl.-Ing. (FH) Denise Müller
+49 931 49708-505
Dipl.-Ing. Janosch Blaul
+49 931 49708-235