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/ Investigation of Using Higher Fines Backfill Materials in the Design and Construction of Mechanically Stabilized Earth Walls in Georgia https://rip.trb.org/View/2719309 Thu, 25 Jun 2026 09:44:45 GMT https://rip.trb.org/View/2719309 Civil Fines and Motor Carrier Safety https://rip.trb.org/View/1497880 Tue, 16 Jan 2018 16:03:31 GMT https://rip.trb.org/View/1497880 Analyzing the Effectiveness of Enhanced Penalty Zones and Police Enforcement as Freeway Speed-Control Measures https://rip.trb.org/View/1229819 Thu, 03 Jan 2013 13:49:09 GMT https://rip.trb.org/View/1229819