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/ EVALUATION OF THE WABCO AC PROPULSION SYSTEM. VOLUME 1. CTS/UMTA AC PROPULSION PROJECT https://trid.trb.org/View/30121 Tue, 14 Jan 2003 00:00:00 GMT https://trid.trb.org/View/30121 THYRISTOR CHOPPER CONTROLS FOR D.C. TRACTION SYSTEMS https://trid.trb.org/View/39985 Wed, 13 Aug 1975 00:00:00 GMT https://trid.trb.org/View/39985