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/ Weather Radar Augmented Positioning (WRAP) Technology for Aerial Vehicles https://rip.trb.org/View/2675937 Mon, 02 Mar 2026 15:37:07 GMT https://rip.trb.org/View/2675937 Feasibility Assessment of Family-Friendly Transit Fares https://rip.trb.org/View/2636141 Mon, 08 Dec 2025 20:00:50 GMT https://rip.trb.org/View/2636141 Stick & Scan: Perching Uncrewed Aerial System for Efficient In-Situ Non-Destructive Inspection of Transportation Infrastructure https://rip.trb.org/View/2622014 Tue, 11 Nov 2025 15:06:01 GMT https://rip.trb.org/View/2622014 2502 Evaluation of In-Place Asphalt Mix Density using DPS https://rip.trb.org/View/2606538 Fri, 03 Oct 2025 11:26:13 GMT https://rip.trb.org/View/2606538 Evaluating Texas Ports Readiness and Opportunities for Alternative Fuels https://rip.trb.org/View/2593188 Tue, 26 Aug 2025 12:37:11 GMT https://rip.trb.org/View/2593188 Retrofitting TxDOT Prestressed Box Beams with Composite Cast In Place Concrete Deck https://rip.trb.org/View/2593186 Tue, 26 Aug 2025 12:32:40 GMT https://rip.trb.org/View/2593186 Investigating Surface Applied Pavement Marking Glass Bead Packages https://rip.trb.org/View/2577108 Fri, 18 Jul 2025 09:46:59 GMT https://rip.trb.org/View/2577108 Feasibility of LED Solar Street Lighting https://rip.trb.org/View/2486973 Fri, 18 Jul 2025 09:25:19 GMT https://rip.trb.org/View/2486973 Steel-free Sinusoidal Joints to Support North Carolina Concrete Airport Pavements https://rip.trb.org/View/2563768 Fri, 13 Jun 2025 12:32:16 GMT https://rip.trb.org/View/2563768 Development of U.S. Vehicle Capacity Models for Multilane and Turbo Roundabouts https://rip.trb.org/View/2558402 Wed, 28 May 2025 09:52:47 GMT https://rip.trb.org/View/2558402 Using Artificial Intelligence to Enhance Transportation Data Quality https://rip.trb.org/View/2558405 Wed, 28 May 2025 09:42:40 GMT https://rip.trb.org/View/2558405 Impacts of Unmanned Aircraft Systems (UAS) Work Zone Lighting https://rip.trb.org/View/2558408 Tue, 27 May 2025 21:01:52 GMT https://rip.trb.org/View/2558408 Engineering Feasibility Study of the Future Extension of the Eisenhower-Johnson Memorial Tunnel (UTI-UTC 12) https://rip.trb.org/View/2543321 Wed, 07 May 2025 18:53:43 GMT https://rip.trb.org/View/2543321 Exploratory Study On The Suitability Of Self-healing Concrete For Applications with Enhanced Mechanical And Durability Performance https://rip.trb.org/View/2549028 Sun, 04 May 2025 15:32:38 GMT https://rip.trb.org/View/2549028 Use of Small UAVs (Unmanned Aerial Vehicles) for Field Measurement of Hydraulic Parameters in Small Drainage Basins https://rip.trb.org/View/2548656 Wed, 30 Apr 2025 09:13:20 GMT https://rip.trb.org/View/2548656