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/ Enhancing Traffic Signal Controller Performance using LiDAR data. https://rip.trb.org/View/2742142 Sat, 01 Aug 2026 09:50:21 GMT https://rip.trb.org/View/2742142 Portable Tool for Periodic Evaluations of Intersection Signal Timings https://rip.trb.org/View/2725460 Wed, 08 Jul 2026 16:36:22 GMT https://rip.trb.org/View/2725460 Guidance for Selecting Pedestrian Safety Treatments at Signalized Intersections to Address Permitted Turn Conflicts https://rip.trb.org/View/2712202 Wed, 10 Jun 2026 11:11:14 GMT https://rip.trb.org/View/2712202 Optimizing Signal Timing Through New Technologies https://rip.trb.org/View/2640688 Tue, 16 Dec 2025 09:06:42 GMT https://rip.trb.org/View/2640688 AI Powered Conflict Detection and Signal Optimization for Right Turn FYAs in Mixed Modal Intersections https://rip.trb.org/View/2640185 Thu, 11 Dec 2025 13:35:20 GMT https://rip.trb.org/View/2640185 Sequencing for Phases with Flashing Yellow Arrow https://rip.trb.org/View/2608463 Mon, 13 Oct 2025 18:57:17 GMT https://rip.trb.org/View/2608463 Impact of Leading Pedestrian Intervals on All Users https://rip.trb.org/View/2608462 Mon, 13 Oct 2025 17:38:46 GMT https://rip.trb.org/View/2608462 Field Deployment and Testing of Enhanced Fixed- and Actuated-Traffic Signal Control Systems https://rip.trb.org/View/2606409 Thu, 02 Oct 2025 15:18:45 GMT https://rip.trb.org/View/2606409 Research Project Name: Development of a CAV Testbed-enhanced Smart Campus at Morgan State University - Phase III https://rip.trb.org/View/2606401 Thu, 02 Oct 2025 14:53:58 GMT https://rip.trb.org/View/2606401 SPR-5018: Connected Freeway and Signalized Corridor Pilot: C-V2X Technologies Deployment for Enhanced Safety and Efficiency in Indiana https://rip.trb.org/View/2590602 Tue, 19 Aug 2025 15:00:54 GMT https://rip.trb.org/View/2590602 Automatic Signal Retiming Using Vehicular Trajectory Data https://rip.trb.org/View/2562295 Fri, 06 Jun 2025 15:12:39 GMT https://rip.trb.org/View/2562295 Innovative Signal Timing Design and Operation Strategies to Improve Nighttime Arterial Safety https://rip.trb.org/View/2536079 Tue, 08 Apr 2025 12:57:25 GMT https://rip.trb.org/View/2536079 Development of a Scalable, Low-Cost, Environmentally-Friendly Adaptive Traffic Signal Control (SLE-ATSC) System https://rip.trb.org/View/2495005 Fri, 31 Jan 2025 16:35:57 GMT https://rip.trb.org/View/2495005 Safety Impacts of Signal System Retiming to Improve Progression https://rip.trb.org/View/2494743 Tue, 21 Jan 2025 10:22:01 GMT https://rip.trb.org/View/2494743 Automatic Signal Retiming for Large Scale Networks with Vehicle Trajectory Data https://rip.trb.org/View/2425176 Wed, 04 Sep 2024 17:22:27 GMT https://rip.trb.org/View/2425176