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/ Ongoing Evaluation of Full-Scale Unpaved Roads Research Test Sites https://rip.trb.org/View/2775959 Thu, 10 Sep 2026 11:19:45 GMT https://rip.trb.org/View/2775959 Local Tax on Dyed Fuels: Possible Revenue and Implementation Strategies https://rip.trb.org/View/2689755 Thu, 10 Sep 2026 09:18:44 GMT https://rip.trb.org/View/2689755 Using a Cosmic Ray Neutron Rover to Measure Unpaved Road Moisture for Improved Maintenance and Safety https://rip.trb.org/View/2408378 Fri, 26 Jul 2024 21:37:53 GMT https://rip.trb.org/View/2408378 Low Cost Safety Strategies for Unpaved Rural Roads https://rip.trb.org/View/2342170 Tue, 20 Feb 2024 17:35:41 GMT https://rip.trb.org/View/2342170 Analysis of Benefits and Costs for Gravel and Unpaved Roads https://rip.trb.org/View/1875087 Fri, 27 Aug 2021 13:44:05 GMT https://rip.trb.org/View/1875087 Use of Waste Quarry Fines as a Binding Material on Unpaved Roads https://rip.trb.org/View/1505639 Wed, 21 Mar 2018 11:43:11 GMT https://rip.trb.org/View/1505639 Evaluation of the Mechanical and Environmental Performance of Biofuel Co-Product-Stabilized Unpaved Roads https://rip.trb.org/View/1436717 Fri, 02 Dec 2016 12:07:15 GMT https://rip.trb.org/View/1436717 Biocement for Road Repair https://rip.trb.org/View/1360873 Tue, 14 Jul 2015 01:01:00 GMT https://rip.trb.org/View/1360873 Spatial Extent of the Impact of Transported Road Materials on the Ecological Function of Forested Landscapes https://rip.trb.org/View/1359761 Thu, 02 Jul 2015 01:01:13 GMT https://rip.trb.org/View/1359761 Alaska Rural Airport Inspection Program https://rip.trb.org/View/1256519 Wed, 17 Jul 2013 01:00:34 GMT https://rip.trb.org/View/1256519 Performance of Dust Palliatives on Unpaved Roads in Rural Alaska https://rip.trb.org/View/1256369 Fri, 12 Jul 2013 01:00:23 GMT https://rip.trb.org/View/1256369 Development of an Alaska Specification for Palliative Applications on Unpaved Roads and Runways https://rip.trb.org/View/1245549 Sat, 09 Mar 2013 01:01:24 GMT https://rip.trb.org/View/1245549 Dust Measurement to Determine Effectiveness of Rural Dust Strategies https://rip.trb.org/View/1234599 Thu, 03 Jan 2013 15:15:17 GMT https://rip.trb.org/View/1234599