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/ Reliability-Aware Accessibility Measurement and Planning for Rural Transportation Systems https://rip.trb.org/View/2703797 Sat, 16 May 2026 11:55:36 GMT https://rip.trb.org/View/2703797 National Accessibility Evaluation Phase II https://rip.trb.org/View/2703751 Fri, 15 May 2026 15:29:13 GMT https://rip.trb.org/View/2703751 Enabling Mobility of Emergency Medical Service through Connected and Automated Vehicle Preemption https://rip.trb.org/View/2669655 Sun, 15 Feb 2026 16:34:35 GMT https://rip.trb.org/View/2669655 Understanding Risks and Opportunities for Ramp Metering Control in a Mixed-autonomy Future https://rip.trb.org/View/2651988 Thu, 08 Jan 2026 15:26:07 GMT https://rip.trb.org/View/2651988 Synthesizing Microtransit and Fixed Route Transit via Rider Hand Off to Improve Transit Efficiency https://rip.trb.org/View/2640190 Thu, 11 Dec 2025 13:47:25 GMT https://rip.trb.org/View/2640190 Cost-Effectiveness and Service Impacts of Bus Transit Priority Strategies https://rip.trb.org/View/2636146 Mon, 08 Dec 2025 19:58:45 GMT https://rip.trb.org/View/2636146 Comparing Pricing Mechanisms of Managed Lanes: Performance Assessment of PR-22 Dynamic Toll Lanes https://rip.trb.org/View/2589111 Sat, 16 Aug 2025 23:49:20 GMT https://rip.trb.org/View/2589111 Express Lanes Benefitting Freight Mobility: Can Express Lane Systems and its Benefits to General-purpose Lanes Improve Freight Mobility? https://rip.trb.org/View/2553996 Fri, 16 May 2025 07:20:18 GMT https://rip.trb.org/View/2553996 Improving Travel Time Data Integration and Estimations for Strategic Prioritization https://rip.trb.org/View/2452921 Fri, 15 Nov 2024 16:26:02 GMT https://rip.trb.org/View/2452921 Impact of All-Way Stop Control Intersections Along Rural and Suburban Corridors https://rip.trb.org/View/2452869 Fri, 15 Nov 2024 15:23:52 GMT https://rip.trb.org/View/2452869 Investigating the Impacts of Smart Charging on Electric Vehicle Charging Choices Within an Activity-based Framework https://rip.trb.org/View/2420065 Thu, 22 Aug 2024 16:10:00 GMT https://rip.trb.org/View/2420065 Analyzing and Predicting Truck Travel Time Reliability https://rip.trb.org/View/2394459 Tue, 18 Jun 2024 09:51:31 GMT https://rip.trb.org/View/2394459 Impacts of Shared Autonomous Vehicles on Traffic Operations (4.17) https://rip.trb.org/View/2378075 Thu, 09 May 2024 15:15:19 GMT https://rip.trb.org/View/2378075 The 15-Minute City Quantified Using Mobility Data https://rip.trb.org/View/2350712 Mon, 11 Mar 2024 21:32:44 GMT https://rip.trb.org/View/2350712 Ecological Driving System for Connected Automated Vehicles: A New Model Predictive Control Framework https://rip.trb.org/View/2343737 Thu, 22 Feb 2024 15:57:28 GMT https://rip.trb.org/View/2343737