Research in Progress (RIP) https://rip.trb.org/ en-us Copyright © 2024. 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/ CTA Operations Control Center Safety Enhancements Project https://rip.trb.org/View/2096548 Fri, 13 Jan 2023 14:49:02 GMT https://rip.trb.org/View/2096548 Warning System for Safety and Maintenance of Freight Railways https://rip.trb.org/View/1234720 Thu, 03 Jan 2013 15:18:14 GMT https://rip.trb.org/View/1234720