Parallel barrier effectiveness under free-flowing traffic conditions. Final report

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088	⊔	⊔	‡aFHWA-RD-92-068
088	⊔	⊔	‡aDOT-VNTSC-FHWA-92-1
100	1	⊔	‡aFleming, Gregg G.
245	1	0	‡aParallel barrier effectiveness under free-flowing traffic conditions. Final report.
260	⊔	⊔	‡c1992.
300	⊔	⊔	‡a104 p. : ‡b5 ref. figs. graphs. tables.
336	⊔	⊔	‡atext ‡btxt ‡2rdacontent
337	⊔	⊔	‡aunmediated ‡bn ‡2rdamedia
338	⊔	⊔	‡avolume ‡bnc ‡2rdacarrier
536	⊔	⊔	‡bGWA-PPA-X27
536	⊔	⊔	‡fHW227/H2002/4E7B1112
536	⊔	⊔	‡aFederal Highway Administration, McLean, Va.
538	⊔	⊔	‡aMode of access: Internet.
590	⊔	⊔	‡aAuthor corporate affiliation: Transportation Systems Center, Cambridge, Mass.
590	⊔	⊔	‡aReport covers the period Jan 1991 - Apr 1992
590	⊔	⊔	‡aSubject code: CDS
590	⊔	⊔	‡aSubject code: NHSN*DE
590	⊔	⊔	‡aSubject code: WU*NHS
650	⊔	7	‡aTraffic noise. ‡2trt
650	⊔	7	‡aNoise barriers. ‡2trt
650	⊔	7	‡aMeasurement. ‡2trt
650	⊔	7	‡aAcoustic properties. ‡2trt
650	⊔	7	‡aVehicle Noise. ‡2umitrist
650	⊔	7	‡aRoadside Noise Attenuators. ‡2umitrist
650	⊔	7	‡aAcoustic Measurements. ‡2umitrist
700	1	⊔	‡aRickley, Edward J.
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