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/ Synthesis of Information Related to Transit Practices. Topic SG-23. Data-Driven Approaches for Optimizing Transit Parts Procurement, Lead Time Risk, and Critical Spare Parts Planning https://rip.trb.org/View/2772554 Tue, 01 Sep 2026 17:16:59 GMT https://rip.trb.org/View/2772554 Efficient Mobility for Rural Communities https://rip.trb.org/View/2683240 Tue, 24 Mar 2026 14:22:18 GMT https://rip.trb.org/View/2683240 Innovative Approaches in Acquiring New or Replacement Fleet Equipment https://rip.trb.org/View/2681240 Tue, 17 Mar 2026 14:49:34 GMT https://rip.trb.org/View/2681240 Effective Practices for Best-Value Construction Projects https://rip.trb.org/View/2558412 Tue, 27 May 2025 20:38:49 GMT https://rip.trb.org/View/2558412 ITD-Controlled Aggregate Material Source Modernization Project https://rip.trb.org/View/2298713 Wed, 29 Nov 2023 13:29:20 GMT https://rip.trb.org/View/2298713 Legal Problems Arising out of Highway Programs. Topic 27-04. Managing Performance for Innovative Technology Contracts https://rip.trb.org/View/2209735 Tue, 11 Jul 2023 10:41:32 GMT https://rip.trb.org/View/2209735 Development of a Refined Superpave Binder Purchase Specification https://rip.trb.org/View/2085721 Fri, 16 Dec 2022 14:15:16 GMT https://rip.trb.org/View/2085721 Global Benchmarking Studies on Green Procurement and Turbo Roundabouts and two additional priority topics to be identified by FHWA leadership https://rip.trb.org/View/2067993 Mon, 21 Nov 2022 16:26:28 GMT https://rip.trb.org/View/2067993 Legal Aspects of Airport Programs. Topic 15-01. Accommodating Federal Agencies at Airports and Related Contractual Concerns https://rip.trb.org/View/2061057 Tue, 15 Nov 2022 20:01:52 GMT https://rip.trb.org/View/2061057 Guide on Progressive Design-Build for Transportation Projects https://rip.trb.org/View/1957099 Tue, 24 May 2022 19:27:38 GMT https://rip.trb.org/View/1957099 Incorporating Quality Assurance into Green Public Procurement Practices https://rip.trb.org/View/1957115 Tue, 24 May 2022 10:19:38 GMT https://rip.trb.org/View/1957115 Legal Aspects of Transit and Intermodal Transportation Programs. Topic 21-03. Update of Selected Studies in Transportation Law, Volume 5, 2014 Supplement (Transit Law) https://rip.trb.org/View/1890700 Mon, 08 Nov 2021 16:30:48 GMT https://rip.trb.org/View/1890700 Transit Vehicle Specification Development in Mississippi – Final Report https://rip.trb.org/View/1883839 Fri, 08 Oct 2021 09:20:09 GMT https://rip.trb.org/View/1883839 Practices for Transportation Agency Procurement and Management of Advanced Technologies https://rip.trb.org/View/1842762 Wed, 24 Mar 2021 19:51:28 GMT https://rip.trb.org/View/1842762 Effective Integration of Human Factors Engineering into System Development Acquisition Programs https://rip.trb.org/View/1761880 Mon, 04 Jan 2021 15:12:30 GMT https://rip.trb.org/View/1761880