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 Research for the AASHTO Standing Committee on Planning. Task 63. Making NAICS (North American Industrial Classification System) Work for Transportation https://rip.trb.org/View/2706284 Wed, 27 May 2026 15:06:13 GMT https://rip.trb.org/View/2706284 Driver to Non-Driver Transitions: Related Health, Mobility and Safety Outcomes https://rip.trb.org/View/2671991 Wed, 18 Feb 2026 11:39:50 GMT https://rip.trb.org/View/2671991 Evaluating the Willingness to Pay for Managed Lanes (MLs) https://rip.trb.org/View/2563659 Wed, 11 Jun 2025 13:19:33 GMT https://rip.trb.org/View/2563659 The Reverse Side of Online Shopping: Examining Sociodemographic and Built-Environment Determinants of Delivery Returns https://rip.trb.org/View/2553166 Thu, 15 May 2025 14:53:38 GMT https://rip.trb.org/View/2553166 Imputing Socio-Demographics for Mobile Trajectors https://rip.trb.org/View/2553157 Tue, 13 May 2025 19:27:30 GMT https://rip.trb.org/View/2553157 Travel Behavior and Financial Impacts of Fare Capping https://rip.trb.org/View/2464324 Tue, 26 Nov 2024 06:17:21 GMT https://rip.trb.org/View/2464324 Effect of Drivers Education on Traffic Safety https://rip.trb.org/View/2437699 Thu, 03 Oct 2024 15:39:19 GMT https://rip.trb.org/View/2437699 Development of a High-resolution Statewide Socio-demographic, Land Use and Economic Development Framework for Transportation Planning https://rip.trb.org/View/2434093 Wed, 25 Sep 2024 07:35:27 GMT https://rip.trb.org/View/2434093 Residential Segregation and the Urban Demographic Shift of Pedestrian and Bicyclist Collisions https://rip.trb.org/View/2401741 Mon, 08 Jul 2024 14:54:10 GMT https://rip.trb.org/View/2401741 State Preference Survey of Pedestrian Street Crossing and Big Data Analysis of Suppressed Pedestrian Trips https://rip.trb.org/View/2394416 Mon, 17 Jun 2024 11:21:13 GMT https://rip.trb.org/View/2394416 Using Data to Enable Community-Centered Transportation https://rip.trb.org/View/2381731 Tue, 21 May 2024 20:26:30 GMT https://rip.trb.org/View/2381731 A Granular Characterization of Mobility-Related Air Pollution Exposure Disparity https://rip.trb.org/View/2350714 Mon, 11 Mar 2024 21:35:36 GMT https://rip.trb.org/View/2350714 Spatiotemporal Trends in Pedestrian Crashes https://rip.trb.org/View/2325688 Mon, 22 Jan 2024 09:42:28 GMT https://rip.trb.org/View/2325688 Comprehensive Analysis of Factors Influencing Pedestrian Injury Severity at Intersection and Non-intersection Locations in Connecticut https://rip.trb.org/View/2321729 Tue, 16 Jan 2024 12:31:29 GMT https://rip.trb.org/View/2321729