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/ Assessment of Establishing an NDOT Aeronautics Division and Identification of Sustainable Funding Mechanisms https://rip.trb.org/View/2739295 Thu, 30 Jul 2026 12:30:56 GMT https://rip.trb.org/View/2739295 Strategies for Addressing Funding Challenges in Transportation Asset Management https://rip.trb.org/View/2712184 Tue, 09 Jun 2026 16:04:26 GMT https://rip.trb.org/View/2712184 Innovative Approaches to Maintenance Funding for Active Transportation Infrastructure on State Highways Research https://rip.trb.org/View/2712169 Tue, 09 Jun 2026 12:38:59 GMT https://rip.trb.org/View/2712169 Improving Benefit-Cost Analysis (BCA) for Rural Application https://rip.trb.org/View/2709239 Wed, 03 Jun 2026 11:51:11 GMT https://rip.trb.org/View/2709239 Incorporating Cost-Based Estimating Techniques into Bid-Based Estimating https://rip.trb.org/View/2709242 Wed, 03 Jun 2026 11:18:30 GMT https://rip.trb.org/View/2709242 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 Zero- and Reduced-Fare Transit Policy and Post-Pandemic Recovery: A Multi-Agency Analysis of Ridership, Service Supply, and Access https://rip.trb.org/View/2697838 Thu, 30 Apr 2026 08:37:11 GMT https://rip.trb.org/View/2697838 Optimization-Based Framework and Decision-Support Tool for Bridge Toll Implementation Under Behavioral and Operational Constraints https://rip.trb.org/View/2696158 Mon, 27 Apr 2026 19:59:05 GMT https://rip.trb.org/View/2696158 TRB Core Program Services for a Highway RD&T Program – Federal Fiscal Year 2026/TRB (State DOTs) Fiscal Year 2027 https://rip.trb.org/View/2692353 Tue, 14 Apr 2026 20:24:09 GMT https://rip.trb.org/View/2692353 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 Successful Applications of Alternative Delivery Methods by Highway Agencies to Accelerate Project Delivery https://rip.trb.org/View/2681234 Tue, 17 Mar 2026 15:10:13 GMT https://rip.trb.org/View/2681234 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 Administration of Highway and Transportation Agencies. Federal Transportation Funding Utilization by States and Strategies to Maximize Efficient and Effective Use https://rip.trb.org/View/2666776 Mon, 09 Feb 2026 20:44:35 GMT https://rip.trb.org/View/2666776 Strategic Approaches to Managing Emerging Transportation Infrastructure Assets Through Public-Private Partnership https://rip.trb.org/View/2658058 Fri, 23 Jan 2026 13:43:13 GMT https://rip.trb.org/View/2658058 Quick-Response Research on Long-Term Strategic Issues. Task 56. Transit Fare Programs for High School and Postsecondary Students https://rip.trb.org/View/2636148 Mon, 08 Dec 2025 20:08:55 GMT https://rip.trb.org/View/2636148