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/ Hotspot Stability of Freight Vehicle Crashes Involving Vulnerable Road Users: A Spatio-Temporal Perspective https://rip.trb.org/View/2625586 Tue, 18 Nov 2025 14:19:08 GMT https://rip.trb.org/View/2625586 Understanding Factors Influencing Truck Crashes with Vulnerable Road Users: A Panel Data Approach https://rip.trb.org/View/2625592 Mon, 17 Nov 2025 16:15:57 GMT https://rip.trb.org/View/2625592 Integrating Large Commercial Motor Vehicle Safety into State Freight and Safety Planning https://rip.trb.org/View/2558373 Thu, 29 May 2025 12:59:45 GMT https://rip.trb.org/View/2558373 Enhancing Rural Roadway Safety through Geospatial Analysis and 2SFCA-Driven Rest Area Serviceability Optimization for Trucks https://rip.trb.org/View/2265842 Thu, 19 Oct 2023 16:40:51 GMT https://rip.trb.org/View/2265842 Completing the Picture of Crashes: Understanding Data Needs and Opportunities for Road Safety https://rip.trb.org/View/2067969 Mon, 21 Nov 2022 16:26:14 GMT https://rip.trb.org/View/2067969 Impact of Truck Drivers and Transportation Infrastructure Characteristics on Large Truck Crashes https://rip.trb.org/View/1904957 Thu, 20 Jan 2022 14:48:36 GMT https://rip.trb.org/View/1904957 Phase 2: Computationally Informed Methodologies for Capturing the Effect of Intervening Structures during Truck Impact Events https://rip.trb.org/View/1757972 Tue, 15 Dec 2020 14:56:27 GMT https://rip.trb.org/View/1757972 Evaluation of Traffic Crash Characteristics on Elevated Sections of Interstates in Louisiana https://rip.trb.org/View/1745432 Thu, 15 Oct 2020 15:36:43 GMT https://rip.trb.org/View/1745432 Assessment and Repair of Prestressed Bridge Girders Subjected to Over-Height Truck Impacts (OHTI) https://rip.trb.org/View/1738102 Thu, 10 Sep 2020 10:54:48 GMT https://rip.trb.org/View/1738102 Evaluate Ohio Department of Transportation's Ability to Decrease Dump Truck Backing Accidents https://rip.trb.org/View/1644893 Thu, 08 Aug 2019 07:55:56 GMT https://rip.trb.org/View/1644893 Investigation and Development of a MASH Test Level 6, Cost-Effective, Barrier System for Containing Heavy Tractor Tank-Trailer Vehicles and Mitigating Catastrophic Crash Event – Phase II https://rip.trb.org/View/1582125 Tue, 05 Feb 2019 16:14:12 GMT https://rip.trb.org/View/1582125 Large Truck Crash Causation Study https://rip.trb.org/View/1458078 Tue, 28 Feb 2017 10:03:45 GMT https://rip.trb.org/View/1458078 Working Group to Consider New Post-Accident Crash Data Elements for Tow-Away Crashes (FAST Act - § 5306) https://rip.trb.org/View/1456999 Wed, 22 Feb 2017 11:47:22 GMT https://rip.trb.org/View/1456999 Truck and Bus Maintenance Requirements and Their Impact on Safety https://rip.trb.org/View/1456962 Wed, 22 Feb 2017 10:17:58 GMT https://rip.trb.org/View/1456962 Assessing the Safety Issues Associated with Isolated Rural Intersections https://rip.trb.org/View/1455578 Fri, 17 Feb 2017 14:45:32 GMT https://rip.trb.org/View/1455578