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 38. Supplemental Evaluation in Support of NCHRP 25-17 https://rip.trb.org/View/1346921 Thu, 19 Mar 2015 01:02:01 GMT https://rip.trb.org/View/1346921 Diesel/Glycerin Emulsion Fuel Project https://rip.trb.org/View/1315722 Fri, 11 Jul 2014 01:01:09 GMT https://rip.trb.org/View/1315722