Parallel Barrier Effectiveness Under Free-Flowing Traffic Conditions (Completed 1992)
- Performer(s): Volpe National Transportation Systems Center
Sponsor(s): FHWA R&D Pooled Fund Study
To order:
National Technical Information Service (NTIS). 5285 Port Royal Rd., Springfield, VA 22161;
Tel: 1-800-553-6847; Fax: 703-605-6900; Email: Orders@NTIS.fedworld.gov;
Order Nos.: FHWA-RD-92-068; DOT-VNTSC-FHWA-92-1; NTIS No. PB92203850.
Abstract
This report presents the results of a measurement study performed at a highway noise barrier site
located along I-495 in Montgomery County, Maryland. The objective of the study was to measure the degradation in acoustic performance of a highway noise barrier due to the close proximity of a parallel barrier on the opposite side of the roadway. The first study is “Parallel Barrier Effectiveness—Dulles Noise Barrier Project” and the third study is “Performance Evaluation of Experimental Highway Noise Barriers.”
Performance Evaluation of Experimental Highway Noise Barriers (Completed 1994)
- Performer(s): Volpe National Transportation Systems Center
Sponsor(s): FHWA R&D Pooled Fund Study
To order:
National Technical Information Service (NTIS). 5285 Port Royal Rd., Springfield, VA 22161-2296;
Tel: 1-800-553-6847; Fax: 703-605-6900; Email: Orders@NTIS.fedworld.gov;
Order Nos.: FHWA-RD-94-093; DOT-VNTSC-FHWA-94-16; NTIS Nos. PB95216909 & PB94213626.
Abstract
During the period October 1986 though April 1994, the Volpe National Transportation Systems Center conducted the National Pooled-Fund Study (NPFS) “Evaluation of Performance of Experimental Highway Noise Barriers.” Two other reports, “Parallel Barrier Effectiveness” and “Parallel Barrier Effectiveness Under Free Flowing Traffic Conditions,” support the NPFS. This report is the third, and final, publication supporting the NPFS. It presents the results of additional analyses of previously collected data and summarizes the findings of the multiyear study.
Traffic Noise Model (FHWA TNM)—Tables for Simple Applications (Completed 1998)
- Performer(s): Volpe National Transportation Systems Center
Sponsor(s): FHWA
To order:
Robert Armstrong. FHWA, HEPN-20, 400 Seventh St., SW., Washington, DC 20590;
Tel: 202-366-2073; Fax: 202-366-3409; Email: Robert.e.armstrong@fhwa.dot.gov.
Abstract
This research will develop tables that can be used to look up calculated traffic noise levels based on the new-generation FHWA Traffic Noise Model (FHWA TNM). The tables will be made available in both diskette and hardcopy format so that the use of a computer to obtain calculated noise levels is not required. The tables can be used for screening traffic noise analyses and simple applications of the FHWA TNM.
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