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/ 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 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 PedX: Automation for Safer Pedestrian Street Lighting at Intersections https://rip.trb.org/View/2440016 Sun, 13 Oct 2024 08:23:12 GMT https://rip.trb.org/View/2440016 Integrating Non-Motorist Facility Data into Comprehensive Road Safety Assessment https://rip.trb.org/View/2229366 Thu, 17 Aug 2023 08:18:52 GMT https://rip.trb.org/View/2229366 Fatigue Resistance of Fluted Lighting Poles https://rip.trb.org/View/2100874 Wed, 18 Jan 2023 11:17:25 GMT https://rip.trb.org/View/2100874 Fatigue Characterization of Galvanized Welded Connections https://rip.trb.org/View/2015225 Tue, 30 Aug 2022 17:27:47 GMT https://rip.trb.org/View/2015225 Development of Updated Warrants for Roadway Lighting https://rip.trb.org/View/1957083 Fri, 27 May 2022 11:31:07 GMT https://rip.trb.org/View/1957083 Guide for Lighting at Innovative Intersections/Interchanges, including Roundabouts https://rip.trb.org/View/1957085 Thu, 26 May 2022 16:53:31 GMT https://rip.trb.org/View/1957085 Performance and Contextual Analysis of Roadway Lighting Systems https://rip.trb.org/View/1909925 Tue, 08 Feb 2022 16:29:11 GMT https://rip.trb.org/View/1909925 Guidelines for Solid-State Roadway Lighting https://rip.trb.org/View/1864201 Mon, 05 Jul 2021 17:42:47 GMT https://rip.trb.org/View/1864201 Development of Automated Roadway Lighting Diagnosis Tools for Nighttime Traffic Safety Improvement, Phase II https://rip.trb.org/View/1756015 Sat, 05 Dec 2020 18:29:22 GMT https://rip.trb.org/View/1756015 Reduce Pedestrian Fatal Crashes in Louisiana by Improving Lighting Conditions https://rip.trb.org/View/1745981 Tue, 20 Oct 2020 11:25:35 GMT https://rip.trb.org/View/1745981 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 Gaps and Emerging Technologies in the Application of Solid-State Roadway Lighting https://rip.trb.org/View/1669980 Tue, 03 Dec 2019 10:22:02 GMT https://rip.trb.org/View/1669980 Development of Automated Roadway Lighting Diagnosis Tools for Nighttime Traffic Safety Improvement https://rip.trb.org/View/1635484 Thu, 04 Jul 2019 10:59:39 GMT https://rip.trb.org/View/1635484