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/ Advancing Urban Co-Modality with Drone Delivery Services https://rip.trb.org/View/2684217 Wed, 25 Mar 2026 16:53:48 GMT https://rip.trb.org/View/2684217 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 Paving the Way for Autonomous and Connected Vehicle Technologies in the Motor Carrier and Rail Industries https://rip.trb.org/View/1436307 Thu, 01 Dec 2016 12:47:21 GMT https://rip.trb.org/View/1436307 Pilot Off Hour Urban Freight Delivery- Contracts https://rip.trb.org/View/1371142 Tue, 06 Oct 2015 09:10:54 GMT https://rip.trb.org/View/1371142