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/ Aeromedical HFACS Nanocode Review and Validation https://rip.trb.org/View/2646975 Thu, 08 Jan 2026 08:56:35 GMT https://rip.trb.org/View/2646975 Guide to Analyzing Economic Impact of Changes in Air Service Connectivity https://rip.trb.org/View/2588337 Tue, 12 Aug 2025 09:53:38 GMT https://rip.trb.org/View/2588337 Legal Issues Relating to Land Use at Airports https://rip.trb.org/View/2506026 Wed, 05 Feb 2025 14:34:16 GMT https://rip.trb.org/View/2506026 Synthesis of Information Related to Airport Practices. Topic S03-20. Integrating Advanced Air Mobility into Aviation System Planning https://rip.trb.org/View/2413901 Mon, 05 Aug 2024 19:41:15 GMT https://rip.trb.org/View/2413901 Feasibility of UAM Vertiport Land Use and Location Planning https://rip.trb.org/View/2286654 Mon, 06 Nov 2023 17:13:09 GMT https://rip.trb.org/View/2286654 Vertiport Systems Integration and Location Assessment https://rip.trb.org/View/2286651 Mon, 06 Nov 2023 16:39:38 GMT https://rip.trb.org/View/2286651 Gene Expression and Biomarker Utility in Postmortem Samples https://rip.trb.org/View/1949473 Mon, 09 May 2022 16:27:51 GMT https://rip.trb.org/View/1949473 Real-time Deep Reinforcement Learning for Evacuation under Emergencies https://rip.trb.org/View/1937027 Sat, 02 Apr 2022 11:21:10 GMT https://rip.trb.org/View/1937027 Analyzing the Role of Air‐Transportation in COVID‐19 Pandemic Disaster https://rip.trb.org/View/1884826 Mon, 11 Oct 2021 23:27:13 GMT https://rip.trb.org/View/1884826 Investigate Age Impacts on Controlled Flight into Terrain (CFIT) Crashes in General Aviation https://rip.trb.org/View/1881804 Mon, 04 Oct 2021 13:27:28 GMT https://rip.trb.org/View/1881804 Rotorcraft Wire Strike https://rip.trb.org/View/1714474 Fri, 12 Jun 2020 16:15:32 GMT https://rip.trb.org/View/1714474 ACRP Insight Event--On-Demand Aviation Services for Mobility, Logistics, Emergency Response, and Humanitarian Use Cases https://rip.trb.org/View/1646734 Mon, 19 Aug 2019 15:31:07 GMT https://rip.trb.org/View/1646734 Measuring and Understanding the Relationship Between Air Service and Regional Economic Development https://rip.trb.org/View/1645871 Mon, 12 Aug 2019 21:59:12 GMT https://rip.trb.org/View/1645871 Develop Airfield Design Guidelines for Large Unmanned Aerial Systems (UAS) https://rip.trb.org/View/1645874 Mon, 12 Aug 2019 21:31:11 GMT https://rip.trb.org/View/1645874 Airborne Collision Severity Evaluation - Structural Impact https://rip.trb.org/View/1565989 Tue, 30 Oct 2018 08:58:33 GMT https://rip.trb.org/View/1565989