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/ National Accessibility Evaluation Phase II https://rip.trb.org/View/2703751 Fri, 15 May 2026 15:29:13 GMT https://rip.trb.org/View/2703751 How Much Do Attitudinal Variables Improve Travel Demand Models? Evaluation Using an Overlap Sample from an Attitude-rich Survey and the 2017 National Household Travel Survey https://rip.trb.org/View/2702856 Thu, 14 May 2026 15:45:54 GMT https://rip.trb.org/View/2702856 SPR-5031: Developing INDOT Road Crack Image Datasets for Advanced Analytics Research https://rip.trb.org/View/2691526 Wed, 06 May 2026 14:55:27 GMT https://rip.trb.org/View/2691526 Improving the Quality and Useability of Planned and Active Work Zone Data https://rip.trb.org/View/2683244 Tue, 24 Mar 2026 10:53:19 GMT https://rip.trb.org/View/2683244 Toward Smarter Mobility: AI-Powered Safety Insights for AVs and Vulnerable Road Users https://rip.trb.org/View/2669549 Thu, 12 Feb 2026 15:28:23 GMT https://rip.trb.org/View/2669549 Assessment of hydroplaning potential in coastal regions using roadway characteristics and related datasets https://rip.trb.org/View/2663101 Thu, 29 Jan 2026 17:13:08 GMT https://rip.trb.org/View/2663101 Bridging Data Gaps with Modeled Data from Generative AI: Advancing Health in Transportation Research https://rip.trb.org/View/2652171 Tue, 13 Jan 2026 16:10:26 GMT https://rip.trb.org/View/2652171 Assessing the Value of LiDAR in Detecting Conflicts at Intersections to Enhance Safety https://rip.trb.org/View/2596528 Tue, 09 Sep 2025 08:19:50 GMT https://rip.trb.org/View/2596528 Customization of a Mobile Field Data Collection Application and Linear Referencing System to Support Geospatial Data Collaboration https://rip.trb.org/View/2566964 Wed, 18 Jun 2025 16:28:13 GMT https://rip.trb.org/View/2566964 CTDOT Pavement Marking Inventory and Retro Reflectivity Compliance https://rip.trb.org/View/2566901 Wed, 18 Jun 2025 13:24:36 GMT https://rip.trb.org/View/2566901 Applications of data science and big data analytics in underground transportation infrastructure (UTI-UTC 02) https://rip.trb.org/View/2543307 Wed, 07 May 2025 19:00:43 GMT https://rip.trb.org/View/2543307 Implementation of AASHTOWare BrR Program for Rating Iowa Bridges https://rip.trb.org/View/2484651 Mon, 30 Dec 2024 12:26:47 GMT https://rip.trb.org/View/2484651 How Effective are Marker Variables at Predicting Attitudinal Factor Scores? An Out-of-sample Evaluation https://rip.trb.org/View/2440257 Thu, 10 Oct 2024 15:50:08 GMT https://rip.trb.org/View/2440257 SPR-4927: Bridge Data Virtual Validator https://rip.trb.org/View/2410439 Tue, 30 Jul 2024 11:19:06 GMT https://rip.trb.org/View/2410439 Developing a Data Repository to Help with TSMO Strategies Evaluations https://rip.trb.org/View/2381698 Mon, 20 May 2024 21:18:05 GMT https://rip.trb.org/View/2381698