Transport Research International Documentation (TRID) https://trid.trb.org/ en-us Copyright © 2026. 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/ RAILWAY NOISE. REDUCTION OF ENVIRONMENTAL NOISE DISTURBANCES CAUSED BY THE WORK OF TRACK MAINTENANCE MACHINES https://trid.trb.org/View/15568 Thu, 09 Jul 1981 00:00:00 GMT https://trid.trb.org/View/15568 THE SOUND ENVIRONMENT IN LOCOMOTIVE CABS https://trid.trb.org/View/2139 Sun, 21 Jan 1973 00:00:00 GMT https://trid.trb.org/View/2139