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/ Studying the Effects of Aircraft Exhaust on Global and Regional Climate https://rip.trb.org/View/1363057 Sat, 25 Jul 2015 01:00:36 GMT https://rip.trb.org/View/1363057 Vulnerability of Transportation System and Evacuation Plan for Coastal https://rip.trb.org/View/1235092 Thu, 03 Jan 2013 15:24:21 GMT https://rip.trb.org/View/1235092 Planning Level Assessment of Greenhouse Gas Emissions for Alternative Transportation Construction Projects https://rip.trb.org/View/1234853 Thu, 03 Jan 2013 15:20:28 GMT https://rip.trb.org/View/1234853 Evaluation of Greenhouse Gas Emission Reduction Strategies for Interregional Travel https://rip.trb.org/View/1232542 Thu, 03 Jan 2013 14:40:18 GMT https://rip.trb.org/View/1232542 Geopolymer Concrete Investigation: The ABCs of GPC https://rip.trb.org/View/1229731 Thu, 03 Jan 2013 13:47:42 GMT https://rip.trb.org/View/1229731 California's 2050 Transportation Context: A Response to Global Warming and Executive Order #S-3-05 https://rip.trb.org/View/1228368 Thu, 03 Jan 2013 13:19:42 GMT https://rip.trb.org/View/1228368