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/ Statewide Multimodal Destination Access Methods and Demographic Analysis https://rip.trb.org/View/2725639 Wed, 08 Jul 2026 16:48:29 GMT https://rip.trb.org/View/2725639 Evaluating Cross-Slope Safety Impacts on Freeways in Georgia https://rip.trb.org/View/2717526 Wed, 24 Jun 2026 13:02:14 GMT https://rip.trb.org/View/2717526 Zero- and Reduced-Fare Transit Policy and Post-Pandemic Recovery: A Multi-Agency Analysis of Ridership, Service Supply, and Access https://rip.trb.org/View/2697838 Thu, 30 Apr 2026 08:37:11 GMT https://rip.trb.org/View/2697838 Governance of Multimodal Planning: Examining Transit Corridor Planning Strategies in California https://rip.trb.org/View/2696845 Tue, 28 Apr 2026 11:01:11 GMT https://rip.trb.org/View/2696845 Assessing Healthcare Transportation Access in a Rural Vermont Community https://rip.trb.org/View/2640183 Thu, 11 Dec 2025 13:06:22 GMT https://rip.trb.org/View/2640183 Mitigating Functional Impediments to Accessing Public Transportation for Older Adults https://rip.trb.org/View/2636142 Mon, 08 Dec 2025 19:45:55 GMT https://rip.trb.org/View/2636142 Legal Aspects of Airport Programs. Topic 18-01. Legal Responsibilities Arising Out of the Americans with Disabilities Act and Air Carrier Access Act https://rip.trb.org/View/2625813 Thu, 20 Nov 2025 16:04:03 GMT https://rip.trb.org/View/2625813 Evaluating Method 2 Horizontal Curvature in Freeway Work Zones: Safety, Suitability, and Alternatives https://rip.trb.org/View/2608464 Mon, 13 Oct 2025 19:12:31 GMT https://rip.trb.org/View/2608464 Freeway Corridor Economic Impact https://rip.trb.org/View/2606590 Fri, 03 Oct 2025 15:21:21 GMT https://rip.trb.org/View/2606590 Investigation of Vulnerable Road User Fatalities and Serious Injuries on Freeways https://rip.trb.org/View/2601433 Thu, 18 Sep 2025 00:57:24 GMT https://rip.trb.org/View/2601433 SPR-5018: Connected Freeway and Signalized Corridor Pilot: C-V2X Technologies Deployment for Enhanced Safety and Efficiency in Indiana https://rip.trb.org/View/2590602 Tue, 19 Aug 2025 15:00:54 GMT https://rip.trb.org/View/2590602 Synthesis of Information Related to Transit Practices. Topic SB-48. Wayfinding Strategies for Improved Access to Transit Centers https://rip.trb.org/View/2576267 Wed, 16 Jul 2025 15:08:44 GMT https://rip.trb.org/View/2576267 Evaluation of the Effectiveness of Installed Wrong-Way Driving Countermeasures on Florida Freeways and Arterials https://rip.trb.org/View/2563982 Mon, 16 Jun 2025 09:21:07 GMT https://rip.trb.org/View/2563982 Missouri Work Zone Speed Study https://rip.trb.org/View/2548661 Wed, 30 Apr 2025 09:40:30 GMT https://rip.trb.org/View/2548661 Developing Regional Integration for Vital Experiences by Strengthening Mobility, Access, and Regional Transit (DRIVE-SMART) https://rip.trb.org/View/2526754 Sat, 22 Mar 2025 12:16:39 GMT https://rip.trb.org/View/2526754