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/ The Effects of Curb Extensions and Stormwater Infrastructure on Traffic Safety in Philadelphia https://rip.trb.org/View/2778224 Thu, 17 Sep 2026 14:57:48 GMT https://rip.trb.org/View/2778224 Impacts of Left-Turn Traffic Signal Phasing Strategies on Safety Outcomes https://rip.trb.org/View/2762048 Wed, 19 Aug 2026 16:02:53 GMT https://rip.trb.org/View/2762048 Analyzing Trends in Micromobility Safety to Inform ODOT’s Safety Programming https://rip.trb.org/View/2726155 Wed, 08 Jul 2026 17:27:42 GMT https://rip.trb.org/View/2726155 Enhancing Commercial Motor Vehicle Safety and Compliance: Evaluating The Aries Pilot and Illegal Bypass Behavior in Oregon https://rip.trb.org/View/2726122 Wed, 08 Jul 2026 17:24:07 GMT https://rip.trb.org/View/2726122 Comparing Traffic Safety Risks Across Transportation Modes https://rip.trb.org/View/2685708 Sun, 29 Mar 2026 18:54:53 GMT https://rip.trb.org/View/2685708 Evaluating Method 2 Horizontal Curvature in Freeway Work Zones: Safety, Suitability, and Alternatives https://rip.trb.org/View/2608464 Mon, 13 Oct 2025 19:12:31 GMT https://rip.trb.org/View/2608464 Analyzing Residential Speeding Using Connected Vehicle Data: A Case Study in the Charlottesville, VA Area https://rip.trb.org/View/2606405 Thu, 02 Oct 2025 15:10:16 GMT https://rip.trb.org/View/2606405 Evaluate Emerging Transportation Technologies and Advancements in Engineering and Roadway Safety Efforts Impact on Crashes https://rip.trb.org/View/2606397 Thu, 02 Oct 2025 09:41:56 GMT https://rip.trb.org/View/2606397 Development of Crash Modification Factors/Functions for Bus Stops https://rip.trb.org/View/2601434 Thu, 18 Sep 2025 01:01:24 GMT https://rip.trb.org/View/2601434 Evaluation of Signs at Highway-Rail Crossings https://rip.trb.org/View/2601423 Wed, 17 Sep 2025 16:18:51 GMT https://rip.trb.org/View/2601423 Evaluation Of The Relationship Between Near Misses And Crash Outcomes At Intersections In Oregon https://rip.trb.org/View/2594039 Thu, 28 Aug 2025 18:18:57 GMT https://rip.trb.org/View/2594039 Turn-on-Red Prohibitions for Dual Right-Turn Lanes https://rip.trb.org/View/2593920 Thu, 28 Aug 2025 09:56:04 GMT https://rip.trb.org/View/2593920 A New Method to Reduce Broadside Crashes at Signalized Intersections https://rip.trb.org/View/2592237 Fri, 22 Aug 2025 15:17:50 GMT https://rip.trb.org/View/2592237 Assessing Performance of the SR 29 Advanced Wildlife Warning System in Collier County https://rip.trb.org/View/2569150 Tue, 24 Jun 2025 12:43:20 GMT https://rip.trb.org/View/2569150 Covid and Traffic Crashes/Impact on Safety Targets https://rip.trb.org/View/2562323 Mon, 09 Jun 2025 07:59:41 GMT https://rip.trb.org/View/2562323