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 Replacement of Cushions in Energy Absorbing Seats – Use of Modeling to Better Understand Test Variability https://rip.trb.org/View/2161002 Wed, 26 Apr 2023 18:10:10 GMT https://rip.trb.org/View/2161002