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The purpose of this report is to document the development of two tools to evaluate the effects of policy changes on the feasibility and reasonableness of noise abatement for the factors described in the Federal Highway Administration (FHWA) noise regulation in Title 23 CFR Part 772 as implemented in the individual state highway agency (SHA) noise policies. These tools allow a user to evaluate different combinations of factors to determine the effects of policy changes. The report specifically addresses the requirements of Tasks 3.6 through 3.8 of the FHWA Task Order No. DTFH61-D-00028-T12-002, 23 CFR 772 Streamlining, Analysis, and Outreach and Task 3 of the FHWA Task Order No. DTFH61-D-00028-0005, 23 CFR 772 Streamlining, Analysis, and Outreach, Phase II.
This report is comprised of the following four chapters:
This report was prepared for and reviewed by FHWA and the project's Technical Working Group (TWG), first as a draft report and then as an interim report. It addresses comments received from FHWA and the TWG during the review process. The intended audience includes analysts and policy-makers within FHWA and state highway agencies (SHAs) who specialize in highway traffic noise and National Environmental Policy Act (NEPA) implementation policies, processes, and procedures.
This is the second printing of this report and includes a new Section 2.1.3.
The initial report was the second of two Final Task 3 Deliverable Documents under Task Order No. DTFH61-D-00028-T12-002. This updated report is the second of two Final Task 3 Deliverable Documents under Task Order No. DTFH61-D-00028-0005.
This document is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The U.S. Government assumes no liability for the use of the information contained in this document.
The U.S. Government does not endorse products or manufacturers. Trademarks or manufacturers' names appear in this report only because they are considered essential to the objective of the document.
The Federal Highway Administration (FHWA) provides high-quality information to serve Government, industry, and the public in a manner that promotes public understanding. Standards and policies are used to ensure and maximize the quality, objectivity, utility, and integrity of its information. FHWA periodically reviews quality issues and adjusts its programs and processes to ensure continuous quality improvement.
|1. Report No.
|2. Government Accession No.||3 Recipient's Catalog No.|
|4. Title and Subtitle
Noise Barrier Acceptance Criteria: Evaluation Tools
5. Report Date
September 2013, updated August 2015
|6. Performing Organization Code|
William Bowlby, PhD, PE, Rennie Williamson and Geoffrey Pratt, PE, Bowlby & Associates, Inc.; Kenneth Kaliski, PE, RSG Inc.
8. Performing Organization Report No.
9. Performing Organization Name and Address
RSG Inc., White River Junction VT
10. Work Unit No. (TRAIS)
11. Contract or Grant No.
DTFH61-11-D-00028-T12-002 and DTFH61-11-D-00028-0005
|12. Sponsoring Agency Name and Address
U.S. Department of Transportation
|13. Type of Report and Period Covered
14. Sponsoring Agency Code
15. Supplementary Notes
This report describes two tools for evaluating the effects on noise abatement decisions caused by changes to the feasibility and reasonableness criteria in state highway agency (SHA) noise policies developed under the FHWA noise regulation in 23 CFR 772. The Noise Abatement Feasibility and Reasonableness Analysis Tool (NAFRAT) uses results from noise barrier designs created with the FHWA Traffic Noise Model Version 2.5. Results are built-in for two designs for each of four actual highway projects or may be user-entered. The analyst may test abatement decisions for one or more designs for a single project against one or more sets of policy criteria or multiple projects designs against one or more sets of criteria, including the criterion on the consideration of viewpoints of property owners and residents. The Noise Abatement Reasonableness Sensitivity Analysis Tool (NARSAT) is based on series of 108 cases derived from hypothetical scenarios involving: one, two, and three rows of receptors; three different receptor densities; two different setbacks from the barrier to the first row of receptors; and six different barrier heights. The tools were utilized for research documented in a companion report.
|17. Key Words
FHWA noise regulation, 23 CFR 772, noise barrier, noise abatement, feasibility, reasonableness, viewpoints
|18. Distribution Statement
No restrictions. This document is available to the public through the National Technical Information Service, Springfield, VA 22161.
19. Security Classification
20. Security Classification
21. No. of Pages
|% 1R, %1||Percentage of first-row (impacted or benefited) receptors (see P1)|
|% ALL, %A||Percentage of all (impacted or benefited) receptors (see PA)|
|# 1R||Number of first-row|
|# All||Number of all (impacted or benefited) receptors|
|#NA||Not Applicable (due to missing criteria)|
|#/%||Number or Percent|
|$||Cost (in dollars)|
|APBR||Area per benefited receptor|
|APBR calc||Calculated APBR|
|Ben, BR||Benefited receptor|
|CFR||Code of Federal Regulations|
|CPBR||Cost per benefited receptor|
|dB(A), dBA||Decibel unit for A-weighted sound level|
|FHWA||Federal Highway Administration|
|FHWA TNM||FHWA Traffic Noise Model Version 2.5|
|Leq||Equivalent sound level in dB(A)|
|N||Number of receptors|
|NAFRAT||Noise Abatement Feasibility and Reasonableness Analysis Tool|
|NARSAT||Noise Abatement Reasonableness Sensitivity Analysis Tool|
|NEPA||National Environmental Policy Act|
|NRDG||Noise reduction design goal|
|P1||Percentage of first-row (impacted or benefited) receptors (see % 1R)|
|PA||Percentage of all (impacted or benefited) receptors (see % ALL)|
|Reas?||Overall reasonableness decision|
|SHA||State highway agency|
|SF||Square foot (feet)|
|TNM||FHWA Traffic Noise Model Version 2.5|
|TWG||Technical Working Group|
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