Road noise prediction : 2 - -Noise propagation computation method including meteorolgical effects(NMPB 2008)

The NMPB-Roads-2008 is the French road noise prediction method leading on from the NMPB-Roads-1996. It is designed for both road project impact studies and for noise mapping in application of Directive 2002/49/EC. This document is intended for both users (design offices, State departments) and software program publishers. It specifies the breakdown of a linear infrastructure into point sources, the micrometeorological characterisation of a site, the search for elementary trajectories and the calculation of the attenuation in an elementary trajectory. The probabilities of occurrence of favourable conditions are tabulated for 41 stations spread across France.

  Foreword Introduction Definitions and notations Method overview Description of the source Taking the micrometeorology into account Propagation analysis Calculations in an elementary path Bibliography   A- Calculation method flow chart   B- Occurrence values and maps of downward-refraction conditions for France  C- Meteorology and sound propagation   D- Meteorological analysis of an acoustic situation  E- Geometric aspects  F- Dealing with special elements   G- Validation elements   H- Description of the sites of the experimental campaigns   I- Sample NMPB-Roads-2008 applications   J- From the NMPB-Roads-96 to the NMPB-Roads-2008