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/ Analysis of the visual character of the major highway corridors of El Paso, Texas https://trid.trb.org/View/1168908 Thu, 23 Aug 2012 19:59:23 GMT https://trid.trb.org/View/1168908 CRITERIA FOR THE DESIGN AND EVALUATION OF TRAFFIC SIGN SYMBOLS https://trid.trb.org/View/290009 Sat, 31 Dec 1988 00:00:00 GMT https://trid.trb.org/View/290009 SIGNING SYMBOLS: HOW WELL DO THEY WORK? https://trid.trb.org/View/283303 Wed, 31 Aug 1988 00:00:00 GMT https://trid.trb.org/View/283303 HYBRID TURN RESTRICTION SIGNS - COMPREHENSION OF SOME ALTERNATIVE FORMS https://trid.trb.org/View/186396 Tue, 31 Jan 1984 00:00:00 GMT https://trid.trb.org/View/186396 EVALUATION OF DRIVER COMPREHENSION OF WORD VERSUS SYMBOL HIGHWAY SIGNS https://trid.trb.org/View/136646 Thu, 16 Jan 1975 00:00:00 GMT https://trid.trb.org/View/136646