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/ Work Zone Worker Alert Systems via a VR-Based Human-in-the-Loop Simulation https://rip.trb.org/View/2611276 Mon, 20 Oct 2025 16:15:19 GMT https://rip.trb.org/View/2611276 Evaluation of One-Way Flagging Operations https://rip.trb.org/View/2286546 Mon, 06 Nov 2023 14:54:18 GMT https://rip.trb.org/View/2286546 SPR-4837: Preventive Flagging Operations for Enhancing Stationary and Mobile Work Zone Safety https://rip.trb.org/View/2253920 Fri, 22 Sep 2023 14:37:30 GMT https://rip.trb.org/View/2253920 Some Core Techniques for Safe Autonomous Driving https://rip.trb.org/View/1841396 Wed, 17 Mar 2021 16:23:36 GMT https://rip.trb.org/View/1841396 Safety Circuit Rider Program Workplan for 2018 https://rip.trb.org/View/1507569 Mon, 02 Apr 2018 13:00:30 GMT https://rip.trb.org/View/1507569 Reducing Traffic Crashes at Road Construction Access Points https://rip.trb.org/View/1486053 Fri, 20 Oct 2017 12:15:20 GMT https://rip.trb.org/View/1486053