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/ Disability, Mode Perceptions, and Travel Behavior https://rip.trb.org/View/2695812 Thu, 23 Apr 2026 17:58:32 GMT https://rip.trb.org/View/2695812 Unraveling the Causes of Fatal Crashes in the U.S.: A Machine Learning Approach to Safer Roads https://rip.trb.org/View/2694440 Tue, 21 Apr 2026 13:45:15 GMT https://rip.trb.org/View/2694440 Examining Attribution of Fault in Fatal & Serious Injury Crashes between Drivers and Vulnerable Road Users https://rip.trb.org/View/2625585 Tue, 18 Nov 2025 15:03:49 GMT https://rip.trb.org/View/2625585 Bridge Load Posting Prediction https://rip.trb.org/View/1750147 Mon, 09 Nov 2020 14:04:38 GMT https://rip.trb.org/View/1750147 Assessing the Impact of Air Pollution on Public Health Along Transit Routes https://rip.trb.org/View/1483621 Fri, 22 Sep 2017 14:20:07 GMT https://rip.trb.org/View/1483621