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/ Wildlife Fencing Effectiveness in Reducing Crashes in the Western US https://rip.trb.org/View/2655748 Mon, 19 Jan 2026 08:33:19 GMT https://rip.trb.org/View/2655748 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 Investigating Residential Road Speeding by Leveraging Connected Vehicle Data 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 Design and Safety Considerations of Center Line Barriers https://rip.trb.org/View/2558364 Thu, 29 May 2025 13:19:57 GMT https://rip.trb.org/View/2558364 Impacts of Turn Lanes on Speed and Crashes Involving Vulnerable Road Users in Urban Areas https://rip.trb.org/View/2558380 Wed, 28 May 2025 14:15:47 GMT https://rip.trb.org/View/2558380 Traffic Speed Effects on Highway Safety Manual Crash Prediction Models https://rip.trb.org/View/2558395 Wed, 28 May 2025 10:16:59 GMT https://rip.trb.org/View/2558395 Safety Impacts of Parent-Taught Driver Education https://rip.trb.org/View/2526796 Sat, 22 Mar 2025 17:36:48 GMT https://rip.trb.org/View/2526796