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/ Audible Warning System on TMA and Maintenance Trucks https://rip.trb.org/View/2675924 Mon, 02 Mar 2026 11:25:35 GMT https://rip.trb.org/View/2675924 Impact of Secondary Red Warning Lights on Incident Response Time – Phase 2 https://rip.trb.org/View/2669547 Thu, 12 Feb 2026 10:50:58 GMT https://rip.trb.org/View/2669547 Investigation of Wrong Way Pavement Alert Devices https://rip.trb.org/View/2319926 Mon, 08 Jan 2024 15:19:52 GMT https://rip.trb.org/View/2319926 Multimodal-AI based Roadway Hazard Identification and Warning using Onboard Smartphones with Cloud-based Fusion https://rip.trb.org/View/1923105 Sun, 06 Mar 2022 15:14:49 GMT https://rip.trb.org/View/1923105 Effective Bridge Deck Weather Warning Technologies https://rip.trb.org/View/1860934 Mon, 21 Jun 2021 10:54:33 GMT https://rip.trb.org/View/1860934 Work Zone Safety III: Calibration of Safety Notifications through Reinforcement Learning and Eye Tracking https://rip.trb.org/View/1844340 Thu, 01 Apr 2021 20:02:26 GMT https://rip.trb.org/View/1844340 Development of a Smartphone Application to Warn the Driver of Unintentional Lane Departure Using GPS Technology https://rip.trb.org/View/1678168 Thu, 09 Jan 2020 15:16:58 GMT https://rip.trb.org/View/1678168 Evaluation of the Performance of Rumble Strips on Pavements Where Seal Coats Have Been Applied https://rip.trb.org/View/1647625 Mon, 26 Aug 2019 15:02:25 GMT https://rip.trb.org/View/1647625 Increasing Work Zone Safety: Worker Behavioral Analysis with Integration of Wearable Sensors and Virtual Reality https://rip.trb.org/View/1607555 Wed, 22 May 2019 13:19:22 GMT https://rip.trb.org/View/1607555 SPR-4306: Back of Queue Warning and Critical Information Delivery to Motorists https://rip.trb.org/View/1530598 Mon, 06 Aug 2018 16:34:21 GMT https://rip.trb.org/View/1530598 Full-Scale Wall of Wind Testing of Variable Message Signs (VMS) Structures to Develop Drag Coefficients for AASHTO Supports Specifications https://rip.trb.org/View/1474339 Thu, 13 Jul 2017 01:02:04 GMT https://rip.trb.org/View/1474339 SPR-3901: Synthesis Study: Best Practices for Maximizing Driver Attention to Work Zone Signs (End of Queue Warning Devices) https://rip.trb.org/View/1356206 Wed, 03 Jun 2015 01:00:36 GMT https://rip.trb.org/View/1356206