Estimating traffic noise for inclined roads with freely flowing traffic

Shiu Keung Tang, K. K. Tong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

33 Citations (Scopus)


Traffic noise measurements on the kerbs of 19 independent inclined trunk roads with freely flowing traffic within the residential areas of Hong Kong are carried out in the present investigation. The performance of the existing noise prediction models in predicting traffic noise from inclined roads is evaluated. By regression analysis and simple physical consideration of the traffic noise production mechanisms, formulae for the prediction of the LA10, LA50, LA90and LAeqare developed or re-calibrated. Results suggest tyre noise has the major contribution to the overall noise environment when the source is an inclined trunk road. Also, the road gradient is found to have a higher contribution to the traffic noise than assumed in the existing models, but becomes unimportant when the background noise level LA90is concerned.
Original languageEnglish
Pages (from-to)171-181
Number of pages11
JournalApplied Acoustics
Issue number2
Publication statusPublished - 1 Feb 2004


  • Environment
  • Traffic noise

ASJC Scopus subject areas

  • Mechanical Engineering
  • Acoustics and Ultrasonics


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