Research in Progress (RIP) https://rip.trb.org/ en-us Copyright © 2024. 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/ Development of Guidelines for Implementing the Flipped Left Diamond Interchange Design https://rip.trb.org/View/2283483 Mon, 30 Oct 2023 22:58:36 GMT https://rip.trb.org/View/2283483 Mitigating Community Harms of Dense Highway Infrastructure - Spaghetti Junctions https://rip.trb.org/View/2244268 Tue, 12 Sep 2023 12:23:12 GMT https://rip.trb.org/View/2244268 Assessing Safety Performance of Atypical Service Interchanges https://rip.trb.org/View/2219016 Tue, 25 Jul 2023 08:09:40 GMT https://rip.trb.org/View/2219016 Rectangular Rapid-Flashing Beacons Experimental Feature https://rip.trb.org/View/2190084 Fri, 02 Jun 2023 19:31:46 GMT https://rip.trb.org/View/2190084 Guide for Pedestrian and Bicycle Safety at Alternative Intersections and Interchanges (A.I.I.) https://rip.trb.org/View/2166263 Mon, 01 May 2023 17:59:41 GMT https://rip.trb.org/View/2166263 Update of Intersection/Interchange Guidelines for Rural Expressways in Nebraska https://rip.trb.org/View/2161157 Thu, 27 Apr 2023 15:22:03 GMT https://rip.trb.org/View/2161157 Development of Crash Modification Factors for Comparing Standard Diamond Interchange to Other Common Interchange Designs https://rip.trb.org/View/2021862 Tue, 13 Sep 2022 11:00:18 GMT https://rip.trb.org/View/2021862 Safety and Traffic Operations at Cloverleaf Interchanges https://rip.trb.org/View/2008580 Wed, 17 Aug 2022 09:01:06 GMT https://rip.trb.org/View/2008580 NCHRP Implementation Support Program. Implementation for NCHRP Research Report 948—Guide for Pedestrian and Bicycle Safety at Alternative Intersections and Interchanges https://rip.trb.org/View/1957067 Fri, 27 May 2022 12:50:45 GMT https://rip.trb.org/View/1957067 Guide for Lighting at Innovative Intersections/Interchanges, including Roundabouts https://rip.trb.org/View/1957085 Thu, 26 May 2022 16:53:31 GMT https://rip.trb.org/View/1957085 Groundwork for the Second Edition of the Alternative Intersection and Interchange Informational Report https://rip.trb.org/View/1870698 Thu, 05 Aug 2021 13:05:48 GMT https://rip.trb.org/View/1870698 Developing a Crash Modification Factor for Converting from an At-Grade Intersection to a Diamond Interchange https://rip.trb.org/View/1870697 Thu, 05 Aug 2021 12:55:51 GMT https://rip.trb.org/View/1870697 Guidelines to Enhance the Constructability of Diverse, Modern, and Unconventional Interchanges and Intersections https://rip.trb.org/View/1844081 Tue, 30 Mar 2021 08:26:00 GMT https://rip.trb.org/View/1844081 Innovative intersection and Interchange Designs and Their Use Across the Southeast (Project E4) https://rip.trb.org/View/1843144 Thu, 25 Mar 2021 20:59:41 GMT https://rip.trb.org/View/1843144 SPR-4545: Alternate Interchange Signing Study for Indiana Highways https://rip.trb.org/View/1724241 Tue, 28 Jul 2020 10:34:10 GMT https://rip.trb.org/View/1724241