1、Standard Practice for Procedures for Measuring Highway Noise AASHTO Designation: R 20-99 (2012) American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 249 Washington, D.C. 20001 TS-5a R 20-1 AASHTO Standard Practice for Procedures for Measuring Highwa
2、y Noise AASHTO Designation: R 20-99 (2012) 1. SCOPE 1.1. This standard practice is to provide guidance in acceptable procedures for measuring highway noise levels. 2. GENERAL PROVISIONS 2.1. It is recommended that the following Federal Highway Administration Report be used for field measurement of h
3、ighway noise levels. 2.1.1. FHWA-PD-96-046, DOT-VNTSC-FHWA-96-5, “Measurement of Highway-Related Noise,” May 1996.11Available from the National Technical Information Service (NTIS) at NTIS, 5285 Port Royal Road, Springfield, VA, 22161. Request NTIS Publication No. PB-83-152561. 2016 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.
