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/ CFST to Concrete Pile Cap Connections - Refinement of Analysis Methodologies and Standardization of Design Details https://rip.trb.org/View/2694292 Fri, 17 Apr 2026 11:22:08 GMT https://rip.trb.org/View/2694292 Study of Real-Time Concrete Strength Measurements and Monitoring Systems that Conform to AASHTO T-412-24 for Use in Materials Testing Which Will Provide Cost Savings and Reduce Waste https://rip.trb.org/View/2687354 Wed, 01 Apr 2026 17:10:04 GMT https://rip.trb.org/View/2687354 Seismic Analysis and Design of Retaining Walls, Buried Structures, Slopes, and Embankments https://rip.trb.org/View/2683238 Thu, 26 Mar 2026 14:22:28 GMT https://rip.trb.org/View/2683238 Successful Applications of Alternative Delivery Methods by Highway Agencies to Accelerate Project Delivery https://rip.trb.org/View/2681234 Tue, 17 Mar 2026 15:10:13 GMT https://rip.trb.org/View/2681234 Update to ACRP Report 25: Airport Passenger Terminal Planning and Design https://rip.trb.org/View/2681232 Tue, 17 Mar 2026 14:37:38 GMT https://rip.trb.org/View/2681232 Assessing the Impacts of Safety-Focused Design Interventions on Arterial Roadways https://rip.trb.org/View/2677552 Tue, 03 Mar 2026 20:07:45 GMT https://rip.trb.org/View/2677552 Pavement Surface Properties Consortium Phase IV - Improving Safety and Saving Lives through Pavement Surface Optimization https://rip.trb.org/View/2672598 Thu, 19 Feb 2026 18:59:56 GMT https://rip.trb.org/View/2672598 Field Friction Testing https://rip.trb.org/View/2672003 Wed, 18 Feb 2026 14:27:59 GMT https://rip.trb.org/View/2672003 Concrete Materials Research Synthesis https://rip.trb.org/View/2671998 Wed, 18 Feb 2026 13:18:58 GMT https://rip.trb.org/View/2671998 Evaluating Water-Cementitious Material Ratio as Acceptance Parameter for Freshly Placed Concrete https://rip.trb.org/View/2671983 Wed, 18 Feb 2026 11:20:18 GMT https://rip.trb.org/View/2671983 Evaluation of Ride Quality and Tining/Finishing Practices for Concrete Pavements https://rip.trb.org/View/2671982 Wed, 18 Feb 2026 11:18:56 GMT https://rip.trb.org/View/2671982 Evaluation of Hamburg Wheel Tracking Test (HWTT) for Rutting Resistance Assessment https://rip.trb.org/View/2671980 Wed, 18 Feb 2026 11:14:14 GMT https://rip.trb.org/View/2671980 Investigation of Reflective Cracking in Wisconsin https://rip.trb.org/View/2671979 Wed, 18 Feb 2026 11:13:16 GMT https://rip.trb.org/View/2671979 Design Requirements for High Traffic Asphalt Mixes to Ensure Pavement Performance https://rip.trb.org/View/2671978 Wed, 18 Feb 2026 11:11:29 GMT https://rip.trb.org/View/2671978 Design and Testing of High-Load Multi-Rotational Disc Bearings for Bridges https://rip.trb.org/View/2669883 Mon, 16 Feb 2026 18:46:02 GMT https://rip.trb.org/View/2669883