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/ Innovative Signal Timing Design and Operation Strategies to Improve Nighttime Arterial Safety https://rip.trb.org/View/2536079 Tue, 08 Apr 2025 12:57:25 GMT https://rip.trb.org/View/2536079 Assessment of Safety Benefits of Technologies to Reduce Pedestrian Crossing Fatalities at Midblock Location https://rip.trb.org/View/2196805 Wed, 14 Jun 2023 11:57:00 GMT https://rip.trb.org/View/2196805 Evaluate the Uses and Technology for Truck Mounted Attenuators https://rip.trb.org/View/1565423 Thu, 25 Oct 2018 13:47:54 GMT https://rip.trb.org/View/1565423 Evaluation of the Cost Effectiveness of Illumination as a Safety Treatment at Rural Intersections https://rip.trb.org/View/1474439 Fri, 14 Jul 2017 12:38:09 GMT https://rip.trb.org/View/1474439 Impact of Red Light Running Camera Flashes on Younger and Older Driver Brake Response Times https://rip.trb.org/View/1316852 Wed, 23 Jul 2014 01:01:12 GMT https://rip.trb.org/View/1316852