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/ NIGHT VISIBILITY OF TRAINS AT RAILROAD-HIGHWAY GRADE CROSSINGS. ABRIDGMENT https://trid.trb.org/View/167542 Sat, 15 Aug 1981 00:00:00 GMT https://trid.trb.org/View/167542 MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES FOR STREETS AND HIGHWAYS, A NATIONAL STANDARD FOR APPLICATION ON ALL CLASSES OF HIGHWAYS https://trid.trb.org/View/138438 Sat, 29 Sep 1979 00:00:00 GMT https://trid.trb.org/View/138438 MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES FOR STREETS AND HIGHWAYS--PART VIII-TRAFFIC CONTROL SYSTEMS FOR RAILROAD-HIGHWAY GRADE CROSSINGS https://trid.trb.org/View/138439 Sat, 29 Sep 1979 00:00:00 GMT https://trid.trb.org/View/138439 DEVELOPMENT OF WARRANTS FOR RURAL AT-GRADE INTERSECTION ILLUMINATION https://trid.trb.org/View/9063 Sat, 31 Jul 1976 00:00:00 GMT https://trid.trb.org/View/9063