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/ Engineering Feasibility Study of the Future Extension of the Eisenhower-Johnson Memorial Tunnel (UTI-UTC 12) https://rip.trb.org/View/2543321 Wed, 07 May 2025 18:53:43 GMT https://rip.trb.org/View/2543321 Fast Running Application for Evaluating Fire Resilience of Tunnel Systems (UTI-UTC 17) https://rip.trb.org/View/2543412 Wed, 07 May 2025 18:24:28 GMT https://rip.trb.org/View/2543412 Developing Guidelines for Daytime Lighting in Short Tunnels https://rip.trb.org/View/2508909 Tue, 11 Feb 2025 15:10:42 GMT https://rip.trb.org/View/2508909 Integrated FFFS-EVS Design Guidelines for Highway Tunnels https://rip.trb.org/View/2100884 Wed, 18 Jan 2023 11:17:30 GMT https://rip.trb.org/View/2100884 Synthesis of Information Related to Highway Practices. Topic 53-16. Critical Findings for Tunnel Functional Systems https://rip.trb.org/View/1853023 Tue, 18 May 2021 19:54:03 GMT https://rip.trb.org/View/1853023