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/ Comparison of Sample Size and Curing time on Concrete Performance https://rip.trb.org/View/2672004 Wed, 18 Feb 2026 14:28:52 GMT https://rip.trb.org/View/2672004 Field Friction Testing https://rip.trb.org/View/2672003 Wed, 18 Feb 2026 14:27:59 GMT https://rip.trb.org/View/2672003 Post Construction Analysis of Major, Mega and Regionally Significant Projects https://rip.trb.org/View/2671992 Wed, 18 Feb 2026 14:23:40 GMT https://rip.trb.org/View/2671992 Driver to Non-Driver Transitions: Related Health, Mobility and Safety Outcomes https://rip.trb.org/View/2671991 Wed, 18 Feb 2026 11:39:50 GMT https://rip.trb.org/View/2671991 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 Seasonal Weight Restriction Decision Making Based on Understanding and Monitoring of Frost Susceptibility of Pavement Structures https://rip.trb.org/View/2671988 Wed, 18 Feb 2026 11:28:12 GMT https://rip.trb.org/View/2671988 Investigate Wisconsin Bridge Scour in Mobile (Alluvial) Sand-Bed Rivers https://rip.trb.org/View/2671987 Wed, 18 Feb 2026 11:26:47 GMT https://rip.trb.org/View/2671987 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 Evaluating the Impact of Improved Roadway Lighting on Nighttime Driver Behavior and Pedestrian Safety https://rip.trb.org/View/2625596 Mon, 17 Nov 2025 14:39:50 GMT https://rip.trb.org/View/2625596 Evaluation of Vehicle Telematics and Infrastructure-based Connected Vehicle Data for Real-Time Safety and Mobility Application https://rip.trb.org/View/2625309 Thu, 13 Nov 2025 15:31:52 GMT https://rip.trb.org/View/2625309 Development of Non-Proprietary Ultra-High Performance Concrete (UHPC) Prestressed Bridge Girders https://rip.trb.org/View/2427399 Mon, 09 Sep 2024 10:15:19 GMT https://rip.trb.org/View/2427399 Pedestrian Level of Traffic Stress (PLTS) Application and Validation https://rip.trb.org/View/2401757 Mon, 08 Jul 2024 14:54:19 GMT https://rip.trb.org/View/2401757