Updating the vehicle noise emission values used in French traffic noise prediction models
BESNARD ; LELONG ; DOISY ; STEIMER
Type de document
COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)
Langue
anglais
Auteur
BESNARD ; LELONG ; DOISY ; STEIMER
Résumé / Abstract
Traffic noise prediction models used in France are based on vehicle noise emission values defined by the French Guide du Bruit des Transports Terrestres [1]. These values, obtained from several thousand measurements recorded from 1973 to 1977, must be updated in order to take into account developments in car and road technology. A research programme was established for this purpose. The parameters, which have an influence on vehicle noise emission, are well known: vehicle type, speed, driving behaviour (acceleration), road surface, road gradient. Ideally, a complete prediction method should provide an emission value for each combination of these parameters. The number and variety of these combinations prevent an exhaustive evaluation simply using only measurements. The first phase of the study consisted in analysing the different combinations and, according to rough estimates deemed acceptable, gathering them into three categories: - 'Basic' combinations; - 'Derived' combinations; - Unlikely combinations or those without predictable stakes for which no emission value will be produced.
