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/ Advancing a Statewide Model for Multimodal Transportation Planning and Asset Management Integration in Rural and Small Urban Contexts https://rip.trb.org/View/2606412 Thu, 02 Oct 2025 15:27:15 GMT https://rip.trb.org/View/2606412 Opportunities and Challenges of Mobility-as-a-Service (MaaS) for Rural-Metro Communities: Case Study of the Rio Grande Valley, TX https://rip.trb.org/View/2459121 Sat, 23 Nov 2024 11:06:04 GMT https://rip.trb.org/View/2459121 Optimizing Complete Streets through Best Practices and Simulation Analysis https://rip.trb.org/View/2397864 Tue, 25 Jun 2024 11:21:09 GMT https://rip.trb.org/View/2397864 Digital Twins as a Catalyst for Sustainable and Smart Cities https://rip.trb.org/View/2350747 Tue, 12 Mar 2024 10:57:01 GMT https://rip.trb.org/View/2350747 National Investigation of the Environmental, Safety and Livability Impacts of Travel Lane Width: Evidence from 10 American Cities https://rip.trb.org/View/2331768 Thu, 01 Feb 2024 10:04:47 GMT https://rip.trb.org/View/2331768 Exploring Shared Micromobility as an Alternative Transportation Option: Opportunities and Challenges in U.S. Mid-sized Cities and Small Towns https://rip.trb.org/View/2265853 Thu, 19 Oct 2023 16:44:01 GMT https://rip.trb.org/View/2265853 Expanding Rural Access to Non-Emergency Medical Transportation https://rip.trb.org/View/2071596 Mon, 28 Nov 2022 14:20:21 GMT https://rip.trb.org/View/2071596 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 State DOT Policies Affecting Adaptive Street Use: Learning from COVID19 Experiences (Project E6) https://rip.trb.org/View/2004433 Wed, 10 Aug 2022 13:55:46 GMT https://rip.trb.org/View/2004433 Impact of Autonomous Vehicle (AV)-Based on Demand Transportation Services on Traffic Crashes https://rip.trb.org/View/1948953 Mon, 09 May 2022 11:04:06 GMT https://rip.trb.org/View/1948953 One-to-Many Simulator Interface with Virtual Test Bed for Equitable Tech Transfer https://rip.trb.org/View/1942832 Fri, 22 Apr 2022 11:11:16 GMT https://rip.trb.org/View/1942832 Implementation and Quantitative Evaluation https://rip.trb.org/View/1938504 Wed, 06 Apr 2022 15:14:19 GMT https://rip.trb.org/View/1938504 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 Potential Impact Analysis of Driverless-Cars on Megaregion Traffic Flow Patterns https://rip.trb.org/View/1878139 Wed, 15 Sep 2021 13:13:37 GMT https://rip.trb.org/View/1878139 A Systems-Level Analysis of Left-Turning Vehicle-Pedestrian Crashes https://rip.trb.org/View/1846422 Tue, 13 Apr 2021 16:30:32 GMT https://rip.trb.org/View/1846422