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/ Anchorage Design and Detailing for Fabric-Reinforced Cementitious Matrix Retrofits of Transportation Concrete Structures https://rip.trb.org/View/2691724 Sun, 12 Apr 2026 23:52:50 GMT https://rip.trb.org/View/2691724 Optimizing External Human-Machine Interfaces (eHMIs) Designs in Autonomous Vehicles to Improve Communication with Drivers and Bicyclists https://rip.trb.org/View/2691668 Sun, 12 Apr 2026 23:39:01 GMT https://rip.trb.org/View/2691668 Naïve Subject Testing – Suite Emergency Passage Features https://rip.trb.org/View/2686617 Wed, 01 Apr 2026 10:17:47 GMT https://rip.trb.org/View/2686617 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 Finding the Bed Shear Stress Using the Logarithmic Law at Channel Roughness Transitions https://rip.trb.org/View/2672767 Mon, 23 Feb 2026 13:58:52 GMT https://rip.trb.org/View/2672767 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 Hydraulic Conductivity of Base Course Material, Pavement Drainage, and Relation to Pavement Buckling https://rip.trb.org/View/2671989 Wed, 18 Feb 2026 11:35:36 GMT https://rip.trb.org/View/2671989 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 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 Novel Surge Barriers for Coastal Protection https://rip.trb.org/View/2665445 Wed, 04 Feb 2026 15:18:48 GMT https://rip.trb.org/View/2665445 Demonstration Projects for Engineering the Foundation Layers for Long-Life Pavement Systems https://rip.trb.org/View/2663575 Mon, 02 Feb 2026 19:14:27 GMT https://rip.trb.org/View/2663575