Research in Progress (RIP) https://rip.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) Research in Progress (RIP) https://rip.trb.org/Images/PageHeader-wTitle-RIP.jpg https://rip.trb.org/ Detecting and Mitigating Low-Level DC Fault Currents in Transit Systems (Phase II TCRP Project D-17) https://rip.trb.org/View/1747284 Mon, 26 Oct 2020 19:36:52 GMT https://rip.trb.org/View/1747284 Evaluation of Work Zone Safety Messages https://rip.trb.org/View/1229519 Thu, 03 Jan 2013 13:43:25 GMT https://rip.trb.org/View/1229519 Mechanical Precision Docking System: Improving Safety & Access for All https://rip.trb.org/View/1227492 Thu, 03 Jan 2013 13:00:32 GMT https://rip.trb.org/View/1227492