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/ From Analysis to Action: Investigating Crash Readiness and the Role of Vehicle Features in Kansas Fatal and Serious Injury Crashes https://rip.trb.org/View/2652249 Tue, 13 Jan 2026 15:11:16 GMT https://rip.trb.org/View/2652249 Device to Optimize Crashworthiness of Breakaway Sign Support System to Meet AASHTO MASH https://rip.trb.org/View/2505728 Mon, 03 Feb 2025 22:23:45 GMT https://rip.trb.org/View/2505728 Method for Using ISPEs in Crash-Testing Protocols https://rip.trb.org/View/2381712 Tue, 21 May 2024 15:29:37 GMT https://rip.trb.org/View/2381712 Tool for Estimating the Deflection of Temporary Traffic Barriers with Reduced Impact Angles https://rip.trb.org/View/2219020 Tue, 25 Jul 2023 08:24:59 GMT https://rip.trb.org/View/2219020 Crashworthiness of Roadside Hardware Impacted by Battery Electric Vehicles https://rip.trb.org/View/2219021 Tue, 25 Jul 2023 08:22:35 GMT https://rip.trb.org/View/2219021 Development and Evaluation of Box-Beam Barrier Configuration for Shielding Fixed Objects and Bridge Ends in Medians https://rip.trb.org/View/2170143 Fri, 12 May 2023 13:48:11 GMT https://rip.trb.org/View/2170143 WorldSID Fleet Testing and Evaluation (VRTC) https://rip.trb.org/View/2050303 Tue, 25 Oct 2022 10:24:51 GMT https://rip.trb.org/View/2050303 Crashworthiness Evaluation of Advanced Frontal ATDs (VRTC) https://rip.trb.org/View/2050293 Tue, 25 Oct 2022 10:24:45 GMT https://rip.trb.org/View/2050293 National In-Service Performance Evaluation Guidelines for Defining Acceptable Roadside Safety Hardware https://rip.trb.org/View/1957060 Fri, 27 May 2022 11:27:56 GMT https://rip.trb.org/View/1957060 Development of Non-proprietary Prefabricated Solutions for Concrete Barrier Systems for Accelerated Bridge Construction https://rip.trb.org/View/1909951 Mon, 07 Feb 2022 18:13:38 GMT https://rip.trb.org/View/1909951 Pooled Fund: In-Service Performance Evaluation of Roadway Safety Features https://rip.trb.org/View/1899651 Wed, 22 Dec 2021 19:29:36 GMT https://rip.trb.org/View/1899651 Investigating and Developing a MASH Compliant Contraflow Ramp Closure Gate https://rip.trb.org/View/1873849 Mon, 23 Aug 2021 15:31:26 GMT https://rip.trb.org/View/1873849 In-Service Performance Evaluation (ISPE) of Roadway Safety Features https://rip.trb.org/View/1861146 Fri, 25 Jun 2021 07:46:24 GMT https://rip.trb.org/View/1861146 Development of a Crashworthy Tangent End Treatment for Low-Speed and Curbed Roadways https://rip.trb.org/View/1854184 Tue, 25 May 2021 22:20:39 GMT https://rip.trb.org/View/1854184 Implementation of MASH Surrogate Test Vehicles for Sign Supports, Breakaway Poles, and Work Zone Traffic Control Devices https://rip.trb.org/View/1854207 Tue, 25 May 2021 10:58:27 GMT https://rip.trb.org/View/1854207