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/ Analyzing the accessibility to safe and connected biking infrastructure facilities: an equity perspective https://rip.trb.org/View/2626987 Wed, 19 Nov 2025 15:13:44 GMT https://rip.trb.org/View/2626987 Operational Characteristics of Conventional and Electric-Assisted Bicycles and Their Riders https://rip.trb.org/View/2487318 Wed, 08 Oct 2025 10:21:41 GMT https://rip.trb.org/View/2487318 Designing Cycling Facilities for Older Cyclists and Cyclists with Disabilities https://rip.trb.org/View/2558366 Thu, 29 May 2025 13:12:53 GMT https://rip.trb.org/View/2558366 "Prioritizing Active Transportation Facilities That Would Benefit from Retrofits” and “Evaluation of Separated Bike Lane Vertical Elements." https://rip.trb.org/View/2441453 Tue, 15 Oct 2024 12:35:15 GMT https://rip.trb.org/View/2441453 New Transit, Bike Infrastructure, and Green Space: Do They Have a Multiplying Effect on Gentrification and Displacement? https://rip.trb.org/View/2422603 Tue, 27 Aug 2024 18:12:02 GMT https://rip.trb.org/View/2422603 Assessing the Effectiveness of Bicycle Infrastructure Treatments through a Large-Scale Trajectories collected with Drones https://rip.trb.org/View/2325391 Fri, 19 Jan 2024 10:43:37 GMT https://rip.trb.org/View/2325391 Integrating Non-Motorist Facility Data into Comprehensive Road Safety Assessment https://rip.trb.org/View/2229366 Thu, 17 Aug 2023 08:18:52 GMT https://rip.trb.org/View/2229366 Understanding External Factors and Workload’s Impact on Cyclist Safety https://rip.trb.org/View/2229119 Wed, 16 Aug 2023 12:10:46 GMT https://rip.trb.org/View/2229119 Technical Support to Increase Safety for People Walking and Biking in Big Sky https://rip.trb.org/View/2216649 Thu, 20 Jul 2023 17:09:46 GMT https://rip.trb.org/View/2216649 The (In)Equitable Distribution of Quality Bicycling Infrastructure https://rip.trb.org/View/1944008 Sun, 04 Sep 2022 15:04:28 GMT https://rip.trb.org/View/1944008 Defining Appropriate Design and Accommodation Thresholds for Active Transportation in a Context-Driven Approach https://rip.trb.org/View/1957087 Mon, 23 May 2022 16:37:05 GMT https://rip.trb.org/View/1957087 Case Studies of Communities of Less Than 10,000 People with Bicycle & Pedestrian Infrastructure https://rip.trb.org/View/1890064 Thu, 04 Nov 2021 10:13:12 GMT https://rip.trb.org/View/1890064 Investigating the Impact of COVID-19 Pandemic Outbreak on Bike Share Usage and Ridership: A Case Study in Houston https://rip.trb.org/View/1881802 Mon, 04 Oct 2021 12:12:21 GMT https://rip.trb.org/View/1881802 Analyze the Use of Green Pavement Markings: Intersection Safety for Non-Motorized Users https://rip.trb.org/View/1867283 Wed, 21 Jul 2021 13:28:46 GMT https://rip.trb.org/View/1867283 Development of a Toolkit on Innovative Finance Strategies to Accelerate Bicycle and Pedestrian (Active Transportation) Project Delivery: "Diversifying DOT’s Build America Bureau (BAB) Portfolio to Include Underutilized Stakeholders." https://rip.trb.org/View/1758946 Tue, 22 Dec 2020 15:54:26 GMT https://rip.trb.org/View/1758946