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/ 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 Application of MASH Test Criteria to Breakaway Sign and Luminaire Supports and Crashworthy Work Zone Traffic Control Devices https://rip.trb.org/View/2433905 Mon, 23 Sep 2024 17:40:19 GMT https://rip.trb.org/View/2433905 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 Proposed AASHTO Guidelines for Implementation of MASH for Sign Supports, Breakaway Poles, and Work Zone Traffic Control Devices https://rip.trb.org/View/1628627 Wed, 05 Jun 2019 13:29:52 GMT https://rip.trb.org/View/1628627 In Service Evaluation of Railroad Signal and Stop Arm Pole Protection https://rip.trb.org/View/1482192 Thu, 07 Sep 2017 16:15:58 GMT https://rip.trb.org/View/1482192