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/ 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 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