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/ WEIGHING FREIGHT CARS BY THE TWO-DRAFT METHOD https://trid.trb.org/View/18769 Mon, 15 Jul 1974 00:00:00 GMT https://trid.trb.org/View/18769 SP SCALE WEIGHS 3 1/2 CARS A MINUTE https://trid.trb.org/View/13035 Wed, 14 Nov 1973 00:00:00 GMT https://trid.trb.org/View/13035