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/ Applying Crash Prediction Models Across Traffic Control and Facility Types https://rip.trb.org/View/2558381 Wed, 28 May 2025 14:12:45 GMT https://rip.trb.org/View/2558381 Develop Crash Predictive Methods for Frontage Roads Including Ramp Terminals, and Intersections with Crossroads in Texas https://rip.trb.org/View/2437688 Thu, 03 Oct 2024 10:27:15 GMT https://rip.trb.org/View/2437688 Redesign of Innovative Gate Arms (Ramp Closure Gate) – Phase I https://rip.trb.org/View/2398089 Fri, 28 Jun 2024 09:09:47 GMT https://rip.trb.org/View/2398089 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 Wrong-Way Driving Entry Points on interstate highways Using land-use Impact Assessment and 911 calls https://rip.trb.org/View/1948950 Mon, 09 May 2022 06:12:26 GMT https://rip.trb.org/View/1948950 Investigation of Merge Strategies at Ramp Area in Connected Vehicle Environment based on Multi-Driver Simulator System https://rip.trb.org/View/1705263 Thu, 07 May 2020 07:57:04 GMT https://rip.trb.org/View/1705263 Analysis of Oversaturated Traffic Flow Conditions on Freeway Facilities https://rip.trb.org/View/1492248 Tue, 19 Dec 2017 15:16:14 GMT https://rip.trb.org/View/1492248 Evaluating Alternative Design of Geometric Configuration for High-Occupancy Vehicle (HOV) Facilities in California https://rip.trb.org/View/1441785 Wed, 04 Jan 2017 10:52:25 GMT https://rip.trb.org/View/1441785 Evaluation of Diverging Diamond Interchanges for Alabama, Phase I https://rip.trb.org/View/1260467 Fri, 30 Aug 2013 01:01:01 GMT https://rip.trb.org/View/1260467 NCHRP - Design Guidance for Interchange Loop Ramps https://rip.trb.org/View/1258731 Tue, 13 Aug 2013 01:01:04 GMT https://rip.trb.org/View/1258731