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/ Beyond Pedestrian Flow: Evaluating Urban Sidewalk Friction and Accessibility via Efficient State Space Models https://rip.trb.org/View/2775059 Fri, 04 Sep 2026 15:18:47 GMT https://rip.trb.org/View/2775059 Innovating TOD Operationalization: A Safety-Oriented, Technology-Based Framework Leveraging Street-Level Imagery and Computer Vision https://rip.trb.org/View/2762042 Wed, 19 Aug 2026 11:50:46 GMT https://rip.trb.org/View/2762042 VISIAM (Visual Street Index for Active Mobility): An AI-Based Tool for Assessing Bikeability and Walkability of Streets https://rip.trb.org/View/2680127 Wed, 11 Mar 2026 15:15:43 GMT https://rip.trb.org/View/2680127 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 Updated Graphics and Report for “Urban Applications of Innovative Intersection Design” https://rip.trb.org/View/2362120 Thu, 04 Apr 2024 10:07:32 GMT https://rip.trb.org/View/2362120 Neighborhood Walkability and Cardiometabolic Disease in Central TX https://rip.trb.org/View/2264298 Fri, 06 Oct 2023 19:15:45 GMT https://rip.trb.org/View/2264298 Building Active Communities Technical Support '23-'24 https://rip.trb.org/View/2221865 Fri, 28 Jul 2023 13:07:52 GMT https://rip.trb.org/View/2221865 Supporting an Active and Healthy Motherhood via Mobile Health Technology https://rip.trb.org/View/1878048 Tue, 14 Sep 2021 16:58:35 GMT https://rip.trb.org/View/1878048 Building Active Communities Technical Support https://rip.trb.org/View/1656367 Tue, 08 Oct 2019 15:01:40 GMT https://rip.trb.org/View/1656367 Creating Neighborhood Walkability Metrics that Represent the Needs of Older People: Developing Appropriate Infrastructure and Policy Interventions https://rip.trb.org/View/1489170 Fri, 17 Nov 2017 16:44:02 GMT https://rip.trb.org/View/1489170 Community-Aware Charging Station Network Design for Electrified Vehicles in Urban Areas: Reducing Congestion, Emissions, Improving Accessibility and Promoting Walking, Bicycling and Use of Public Transportation https://rip.trb.org/View/1397946 Thu, 11 Feb 2016 11:23:57 GMT https://rip.trb.org/View/1397946