Research in Progress (RIP) https://rip.trb.org/ en-us Copyright © 2024. 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/ Evaluate Alternative Methods to Examine Visibility of Pavement Markings https://rip.trb.org/View/1879839 Thu, 23 Sep 2021 10:46:33 GMT https://rip.trb.org/View/1879839 Optimizing Work Zone Lighting https://rip.trb.org/View/1370054 Wed, 23 Sep 2015 16:23:10 GMT https://rip.trb.org/View/1370054 Safety and Performance Criteria for Retroreflective Pavement Markers https://rip.trb.org/View/1330734 Thu, 13 Nov 2014 01:01:25 GMT https://rip.trb.org/View/1330734 Developing and Testing a LED System to Improve Pedestrian Safety in Nevada https://rip.trb.org/View/1329057 Tue, 28 Oct 2014 01:00:16 GMT https://rip.trb.org/View/1329057 Work Zone Crash Analysis and Modeling to Identify Factors Associated with Crash Severity and Frequency https://rip.trb.org/View/1286097 Thu, 16 Jan 2014 01:00:17 GMT https://rip.trb.org/View/1286097