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/ OPERATIONAL RECOMMENDATIONS FOR DOOR CONTROL SYSTEMS IN METROPOLITAN RAILWAYS https://trid.trb.org/View/275983 Sat, 28 Aug 2004 04:44:14 GMT https://trid.trb.org/View/275983 SECURITY AND PROBABILITY IN RAILWAY SIGNALLING https://trid.trb.org/View/202536 Mon, 30 Apr 1984 00:00:00 GMT https://trid.trb.org/View/202536 SAFETY METHODOLOGY IN RAIL RAPID TRANSIT SYSTEM DEVELOPMENT https://trid.trb.org/View/10568 Sun, 31 Jan 1982 00:00:00 GMT https://trid.trb.org/View/10568 MULTI-LOAD-PATH STRUCTURES FOR HIGHWAY BRIDGES https://trid.trb.org/View/146520 Wed, 30 Jan 1980 00:00:00 GMT https://trid.trb.org/View/146520 EVOLVING A RATIONAL TRANSIT SAFETY PROGRAM https://trid.trb.org/View/67170 Wed, 30 Mar 1977 00:00:00 GMT https://trid.trb.org/View/67170