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/ Changing Motor Carrier Safety and Credentialing Violations to Civil Penalties https://rip.trb.org/View/2768419 Wed, 26 Aug 2026 17:04:25 GMT https://rip.trb.org/View/2768419 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 SPR 781 Optimizing SCDOT’s Permitting, Mitigation, and Compliance Systems to Improve Project Delivery https://rip.trb.org/View/2719301 Thu, 25 Jun 2026 08:53:55 GMT https://rip.trb.org/View/2719301 Leading Permitting Practices that Harmonize Enforcement of Divisible Load Permits across Jurisdictions https://rip.trb.org/View/2681239 Tue, 17 Mar 2026 14:58:59 GMT https://rip.trb.org/View/2681239 Benefits and Barriers of Utility Infrastructure in Transportation Rights-of-Way https://rip.trb.org/View/2558403 Wed, 28 May 2025 09:48:23 GMT https://rip.trb.org/View/2558403 Development of a Tool to Streamline and Expedite the General Permit Application https://rip.trb.org/View/2507241 Mon, 10 Feb 2025 11:17:42 GMT https://rip.trb.org/View/2507241 Truck Permits: Managing Increasing Loads and Mitigating Infrastructure Damage to Balance Freight Mobility https://rip.trb.org/View/2472700 Mon, 09 Dec 2024 10:27:20 GMT https://rip.trb.org/View/2472700 Best Practices for Oversized/Overweight Vehicles https://rip.trb.org/View/2420004 Thu, 22 Aug 2024 09:37:21 GMT https://rip.trb.org/View/2420004 Synthesis of Information Related to Highway Practices. Topic 56-14. State DOT Training Programs Used to Comply with NPDES Stormwater Permit Requirements https://rip.trb.org/View/2384702 Fri, 31 May 2024 20:38:48 GMT https://rip.trb.org/View/2384702 Synthesis of Information Related to Highway Practices. Topic 56-13. DOT Budgetary Practices for Municipal Separate Storm Sewer System (MS4) Permit Programs https://rip.trb.org/View/2384692 Thu, 30 May 2024 16:10:11 GMT https://rip.trb.org/View/2384692 Load Rating and Posting of Long-Span Bridges https://rip.trb.org/View/2296638 200 feet. Long-span bridges get special engineering analysis in the design phase, but methods for evaluating them in service are limited. To ensure public safety while sustaining commerce and preserving vital infrastructure, methods for rational load rating, permitting, and posting are essential. Research is needed to help state departments of transportation evaluate their long-span bridges. The objective of this research is to develop procedures for load rating, posting, and permitting of highway bridges with spans greater than 200 feet in length. It shall consider all applicable load effects.]]> Mon, 27 Nov 2023 19:28:48 GMT https://rip.trb.org/View/2296638 From Vetocracy to Capacity: Rebalancing State Power and Stakeholder Interests in American Infrastructure Development https://rip.trb.org/View/2250685 Thu, 21 Sep 2023 13:06:14 GMT https://rip.trb.org/View/2250685 Synthesis of Information Related to Highway Practices. Topic 55-07. Stormwater Retrofit Programs and Practices Through Third-Party Partnerships https://rip.trb.org/View/2190445 Mon, 05 Jun 2023 16:13:53 GMT https://rip.trb.org/View/2190445 National Pollutant Discharge Elimination System (NPDES) permitting reform studies https://rip.trb.org/View/2062459 Tue, 15 Nov 2022 16:17:59 GMT https://rip.trb.org/View/2062459 National Liaison Program https://rip.trb.org/View/2062458 Tue, 15 Nov 2022 16:17:59 GMT https://rip.trb.org/View/2062458