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/ Rail Economic Contribution Study https://rip.trb.org/View/2784542 Tue, 29 Sep 2026 15:13:11 GMT https://rip.trb.org/View/2784542 Economic Contribution of the North Carolina Ferry System https://rip.trb.org/View/2781131 Tue, 29 Sep 2026 14:56:30 GMT https://rip.trb.org/View/2781131 Local Tax on Dyed Fuels: Possible Revenue and Implementation Strategies https://rip.trb.org/View/2689755 Thu, 10 Sep 2026 09:18:44 GMT https://rip.trb.org/View/2689755 A Regional Approach to Pavement Design for Low-Volume Roads https://rip.trb.org/View/2691525 Thu, 10 Sep 2026 08:56:22 GMT https://rip.trb.org/View/2691525 Cost Effectively Building Resilience into Freight Transportation Operations and Capital/Infrastructure Investments https://rip.trb.org/View/2692316 Thu, 10 Sep 2026 08:39:16 GMT https://rip.trb.org/View/2692316 Evaluation of Acceptance Approaches for Balanced Mix Design in Asphalt Pavements https://rip.trb.org/View/2696937 Thu, 10 Sep 2026 08:23:44 GMT https://rip.trb.org/View/2696937 AI-driven Tax Increment Financing: Revolutionizing Transportation Infrastructure Funding https://rip.trb.org/View/2696939 Thu, 10 Sep 2026 08:17:28 GMT https://rip.trb.org/View/2696939 Allocating Highway Expenses into a Smartphone-Based Per Mile Framework https://rip.trb.org/View/2696941 Thu, 10 Sep 2026 08:13:05 GMT https://rip.trb.org/View/2696941 Cost Recovery for New Entrant Aircraft Technologies https://rip.trb.org/View/2772541 Thu, 03 Sep 2026 08:27:06 GMT https://rip.trb.org/View/2772541 Conduct Economic Impact Assessment of Transit in Texas https://rip.trb.org/View/2767431 Thu, 27 Aug 2026 11:25:19 GMT https://rip.trb.org/View/2767431 Impact Study on Increasing Truck Permit Weight Limits: Infrastructure & Economic Considerations https://rip.trb.org/View/2724819 Wed, 08 Jul 2026 13:35:02 GMT https://rip.trb.org/View/2724819 Cost-Benefit Analysis of Preemptive Weather-Related Road Closures https://rip.trb.org/View/2689390 Tue, 02 Jun 2026 12:24:05 GMT https://rip.trb.org/View/2689390 Infrastructure Data System (IDS) https://rip.trb.org/View/2696940 Sat, 30 May 2026 12:16:43 GMT https://rip.trb.org/View/2696940 Capital Investment, Financing, Flood Risk, and Transportation Safety in the MidAmerica Region https://rip.trb.org/View/2706033 Sat, 23 May 2026 17:36:26 GMT https://rip.trb.org/View/2706033 A Performance- and Cost-Based Framework to Evaluate the Value of Multimodal Logistics Infrastructure https://rip.trb.org/View/2703796 Sat, 16 May 2026 11:52:47 GMT https://rip.trb.org/View/2703796