Transport Research International Documentation (TRID) https://trid.trb.org/ en-us Copyright © 2024. National Academy of Sciences. All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) Transport Research International Documentation (TRID) https://trid.trb.org/Images/PageHeader-wTitle.jpg https://trid.trb.org/ FLORIDA NOISE BARRIER EVALUATION AND COMPUTER MODEL VALIDATION https://trid.trb.org/View/687121 5 dB:LAeq insertion loss at distances equivalent to the first row of homes, where LAeq is the A-weighted Leq) except one site because of marginal additional shielding from a berm barrier combination. Only three sites had an insertion loss of less than 5 dB at distances representative of the second row of homes. Overall, measurements indicate that the barriers provide substantial sound level reduction for residents along the highway. TNM was the best prediction model when considering all test sites; however, the STAMINA models were more accurate at predicting source level. TNM predictions using the Average pavement input overpredicted the reference sound levels measured at these sites. TNM predictions using the OGAC (open-graded asphalt concrete) input were improved (under 2 dB:LAeq of error) over those using the Average pavement type input. This result is expected because Florida uses an open-graded asphalt friction mix.]]> Wed, 07 Jan 2004 00:00:00 GMT https://trid.trb.org/View/687121 CONTINUED EVALUATION OF NOISE BARRIERS IN FLORIDA https://trid.trb.org/View/724343 Wed, 23 Oct 2002 00:00:00 GMT https://trid.trb.org/View/724343 VEHICLE EMISSION NOISE EVALUATION FOR ARIZONA SPECIFIC STAMINA 2.0 AND TRAFFIC NOISE MODEL (TNM) https://trid.trb.org/View/666418 Wed, 18 Oct 2000 00:00:00 GMT https://trid.trb.org/View/666418