EVALUATION OF THE FHWA HIGHWAY TRAFFIC NOISE PREDICTION PROCEDURE (SNAP 1)
Traffic noise prediction procedures are used in the design of new highways to determine if noise is limited to specific levels. A previous study evaluated the procedure outlined in NCHRP Report 117 and developed a correction factor which was incorporated into Kentucky's noise prediction procedure. This adjusted NCHRP 117 procedure has been used in Kentucky for the past several years. The Federal Highway Administration has developed a new procedure to predict traffic noise levels. The objective of this study was to evaluate the new prediction procedure, designated as SNAP 1. Comparisons of measured and predicted noise levels showed that predictions obtained from SNAP 1 yield better results than from the adjusted NCHRP 117 procedure. Therefore, it is recommended that the SNAP 1 prediction procedure be adopted. There is no need for a general correction factor; however, adjustments to specific portions of the procedure may be necessary to optimize the predictions.
- Record URL:
- Sponsored in part by Federal Highway Administration, Washington, DC.
Kentucky Department of TransportationBureau of Highways
Frankfort, KY United States 40601
Federal Highway Administration1200 New Jersey Avenue, SE
Washington, DC United States 20590
- Agent, K R
- Publication Date: 1980-1
- Pagination: 23 p.
- TRT Terms: Acoustic measuring instruments; Acoustics; Data collection; Evaluation; Forecasting; Highway traffic; Highways; Noise; Sound level; Sound level meters; Traffic noise
- Old TRIS Terms: Acoustic measurement; Noise analyzers; Noise sound; Vehicular traffic
- Subject Areas: Environment; Highways;
- Accession Number: 00313964
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: RR-534 Res Rpt.
- Files: NTIS, TRIS, USDOT, STATEDOT
- Created Date: Jul 22 1980 12:00AM