Roadway noise field measurements and modeling large sites in CadnaA

Abstract

Modeling roadway automobile traffic noise in CadnaA prediction software offers the opportunity to extrapolate larger site information from a small sample of field measurements. This presentation will discuss two case studies where multiple short term field measurement locations were used to calibrate large site noise analyses. Using publicly available Average Annual Daily Traffic (AADT) counts from local municipalities as the basis for site calculations was attempted but found to not correlate well with field measurements. A review and discussion of the differences will be presented.