The Volpe Center Acoustics Facility, in support of theFederal
Highway Administration(FHWA), investigatedthe implementation of
pavement effects inthe FHWA Traffic Noise Model (TNM). Three
options were considered, resulting in the recommendation of two
options: 1) implementation of user-defined pavement-specific
emission levels (REMELs), with proof of adequate data; and 2)
implementation of on-board sound intensity (OBSI)-adjusted
tire/pavement noise source levels, implemented as a large database
in the FHWA TNM and also as a user-defined option. Each option
would also include adjusting for the pavement sound absorption by
applying pavement-specific effective flow resistivity (EFR) values.
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