Arizona Quiet Pavement Pilot Program: Comprehensive Report
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2018-05-01
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TRIS Online Accession Number:01674133
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Edition:FINAL
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NTL Classification:NTL-HIGHWAY/ROAD TRANSPORTATION-Materials;NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance;
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Abstract:The Quiet Pavement Pilot Program (QPPP) was developed in cooperation with the Federal Highway Administration to evaluate the noise benefit of asphalt rubber friction course (ARFC) on urban freeways in the Phoenix, Arizona, area. The research was conducted periodically over 10 years and involved the use of three types of testing methods to assess the potential of ARFC as a noise abatement measure: Type 1 examined tire/pavement noise at the source; Type 2 examined noise in residential neighborhoods near the freeways; and Type 3 evaluated noise using direct measures of traffic noise adjacent to the freeways. Sound absorption measurements were also made at specific sites at various times throughout the project. Type 1 measurements documented an average initial reduction of 8.7 dBA and an average increase of 0.5 dB/year afterward. The Type 2 measurements revealed an average initial reduction of 5.2 dBA, while the Type 3 measurements showed an average initial reduction of 9.1 dBA and an average increase of 0.5 dB/year.
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