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/ Cost Recovery for New Entrant Aircraft Technologies https://rip.trb.org/View/2772541 Thu, 03 Sep 2026 08:27:06 GMT https://rip.trb.org/View/2772541 Full Closure Versus Lane Closures for Freeway Maintenance https://rip.trb.org/View/2763062 Wed, 19 Aug 2026 17:20:57 GMT https://rip.trb.org/View/2763062 Identifying Precipitation Variability in Georgia https://rip.trb.org/View/2719329 Thu, 25 Jun 2026 11:52:56 GMT https://rip.trb.org/View/2719329 Improving Life-Cycle Cost Analysis (LCCA) of Pavements with Geosynthetics Used as Separators with Real Life-Cycle Cost Data https://rip.trb.org/View/2712204 Wed, 10 Jun 2026 11:16:58 GMT https://rip.trb.org/View/2712204 Smart Drop-Shipping and Stocking Decision Support System https://rip.trb.org/View/2703794 Sat, 16 May 2026 11:49:44 GMT https://rip.trb.org/View/2703794 Assessment of Litter Hot Spot Areas for Targeted Reduction in Prince George's County https://rip.trb.org/View/2701237 Wed, 13 May 2026 09:15:15 GMT https://rip.trb.org/View/2701237 Rural Vehicle Markets and Consumer Affordability https://rip.trb.org/View/2691725 Sun, 12 Apr 2026 23:55:16 GMT https://rip.trb.org/View/2691725 Personal Vehicle Ownership and Operating Cost Calculator (Version 2.0) for Quantifying On-road Vehicle Operating Costs https://rip.trb.org/View/2691663 Sun, 12 Apr 2026 23:22:20 GMT https://rip.trb.org/View/2691663 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 Cost Effective Roundabouts: Evaluate Options for Reducing Roundabout Footprints and Construction Costs https://rip.trb.org/View/2636041 Fri, 05 Dec 2025 14:19:53 GMT https://rip.trb.org/View/2636041 DOT Application of the Palmiter Stream Management Technique in Small Streams https://rip.trb.org/View/2633332 Tue, 02 Dec 2025 13:37:51 GMT https://rip.trb.org/View/2633332 Managing the Prior Rights and Prescriptive Rights of Utilities https://rip.trb.org/View/2558399 Wed, 28 May 2025 10:03:16 GMT https://rip.trb.org/View/2558399 Strategies for Controlling Cost and Schedule Growth on Alternative Delivery Projects https://rip.trb.org/View/2558415 Tue, 27 May 2025 20:31:48 GMT https://rip.trb.org/View/2558415 The Downstream Infrastructure Impacts of Design Vehicle Selection https://rip.trb.org/View/2558437 Tue, 27 May 2025 16:11:18 GMT https://rip.trb.org/View/2558437 RES2023-30: I-24 Smart Corridor https://rip.trb.org/View/2539923 Thu, 17 Apr 2025 13:50:06 GMT https://rip.trb.org/View/2539923