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/ Salem District Distributed Acoustic Sensing Pilot on I-81: Performance Evaluation Research Proposal https://rip.trb.org/View/2778217 Thu, 17 Sep 2026 09:02:23 GMT https://rip.trb.org/View/2778217 Public Utilities Within SDDOT’s Highway Right of Way https://rip.trb.org/View/2704041 Wed, 20 May 2026 12:00:00 GMT https://rip.trb.org/View/2704041 Synthesis of Information Related to Highway Practices. Topic 57-16. Practices Related to Public Art in State DOT Rights-of-Way and Facilities https://rip.trb.org/View/2630491 Tue, 25 Nov 2025 17:33:43 GMT https://rip.trb.org/View/2630491 Implementation of NCHRP Research Report 887 - Guidance for Underwater Installation of Filter Systems https://rip.trb.org/View/2560834 Tue, 03 Jun 2025 13:24:29 GMT https://rip.trb.org/View/2560834 Statewide Pavement Marking Condition Assessment Program https://rip.trb.org/View/2485381 Fri, 03 Jan 2025 16:27:13 GMT https://rip.trb.org/View/2485381 Long-Term Maintenance Needs and Costs of Green-Colored Pavement Markings and Flexible Post Delineators https://rip.trb.org/View/2485225 Tue, 31 Dec 2024 11:09:54 GMT https://rip.trb.org/View/2485225 Refinement of Reinforced Concrete Box Culvert Installation Guidelines https://rip.trb.org/View/2377861 Mon, 06 May 2024 15:54:32 GMT https://rip.trb.org/View/2377861 Tightening Criteria for Stainless Steel Bolts https://rip.trb.org/View/2100879 Wed, 18 Jan 2023 11:17:27 GMT https://rip.trb.org/View/2100879 SPR-4713: Development of Guidelines for Compatible Sensor Installation, Data Collection, and Database-based Visualization for INDOT https://rip.trb.org/View/2059482 Fri, 11 Nov 2022 10:02:33 GMT https://rip.trb.org/View/2059482 Evaluate Alternative Methods to Examine Visibility of Pavement Markings https://rip.trb.org/View/1879839 Thu, 23 Sep 2021 10:46:33 GMT https://rip.trb.org/View/1879839 Acoustic Effectiveness of Vinyl Fence Noise Walls https://rip.trb.org/View/1762184 Wed, 06 Jan 2021 11:45:43 GMT https://rip.trb.org/View/1762184 Effects of Construction Installation Methods on the Design and Performance of Drilled Shaft Foundations https://rip.trb.org/View/1707187 Wed, 20 May 2020 22:16:36 GMT https://rip.trb.org/View/1707187 Guide to the Contextual Application of Overhead Lighting on Highways https://rip.trb.org/View/1707197 Wed, 20 May 2020 18:48:43 GMT https://rip.trb.org/View/1707197 Development of Guidance for Non-Standard Roadside Hardware Installations https://rip.trb.org/View/1707224 Tue, 19 May 2020 17:09:00 GMT https://rip.trb.org/View/1707224 SPR-4423: Pavement Markings for Asphalt and Concrete Pavements https://rip.trb.org/View/1646228 Thu, 15 Aug 2019 16:33:09 GMT https://rip.trb.org/View/1646228