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/ Innovations Deserving Exploratory Analysis--The Transit IDEA Program. IDEA 105. Mechanotherapetic Cushion for Customers and Operators in Public Transit https://rip.trb.org/View/2572332 Tue, 08 Jul 2025 17:07:55 GMT https://rip.trb.org/View/2572332 Nanomodified Cementitious Composites Incorporating Waste Polymer Microfibers for Durable and Environmentally Friendly Infrastructure https://rip.trb.org/View/2023816 Fri, 16 Sep 2022 11:11:51 GMT https://rip.trb.org/View/2023816