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/ Research for the AASHTO Standing Committee on Planning. Task 63. Making NAICS (North American Industrial Classification System) Work for Transportation https://rip.trb.org/View/2706284 Wed, 27 May 2026 15:06:13 GMT https://rip.trb.org/View/2706284