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/ Evaluation of a Local Carbonate Aggregate Source for Pavement Surface Applications in the Bristol District https://rip.trb.org/View/2714406 Tue, 16 Jun 2026 09:54:44 GMT https://rip.trb.org/View/2714406 Virtual Reality as a Tool to Enhance the Design Review Process https://rip.trb.org/View/2606404 Thu, 02 Oct 2025 15:07:13 GMT https://rip.trb.org/View/2606404