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/ Assessment of Pilot Workload in Non-Vertical Navigation (VNAV) Aircraft during Simultaneous Parallel Approach Operations https://rip.trb.org/View/2582403 Tue, 29 Jul 2025 13:02:39 GMT https://rip.trb.org/View/2582403 Angle of Attack Equipment for General Aviation Operations https://rip.trb.org/View/1392004 Tue, 19 Jan 2016 16:03:57 GMT https://rip.trb.org/View/1392004 Runway Centerline Deviation Study https://rip.trb.org/View/1392181 Tue, 19 Jan 2016 16:03:39 GMT https://rip.trb.org/View/1392181 Ground Based Augmentation System (GBAS) Integrity Research for Category 3 Aircraft Precision Approach https://rip.trb.org/View/1361054 Thu, 16 Jul 2015 01:00:25 GMT https://rip.trb.org/View/1361054