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/ RES2025-05: Case Studies on the Economic Benefits of TDOT's Rail Connectivity Grant Program https://rip.trb.org/View/2437330 Mon, 30 Sep 2024 16:07:16 GMT https://rip.trb.org/View/2437330 Roundabouts, J-Turn, etc. - Understanding their Economic Impacts https://rip.trb.org/View/2414044 Wed, 07 Aug 2024 17:23:45 GMT https://rip.trb.org/View/2414044 Benefit-Cost Analysis of Rural CAV Deployment https://rip.trb.org/View/2238293 Fri, 01 Sep 2023 16:46:52 GMT https://rip.trb.org/View/2238293 Revenue and Financing Alternatives for Medium and Small U.S. Airports in an Evolving Aviation Landscape https://rip.trb.org/View/2226007 Tue, 08 Aug 2023 06:57:42 GMT https://rip.trb.org/View/2226007 Guide for Measuring Financial Benefits of Airport Safety Management Systems https://rip.trb.org/View/2007980 Tue, 16 Aug 2022 14:07:34 GMT https://rip.trb.org/View/2007980 A Balanced Look at Local Airport Activity and Climate Change https://rip.trb.org/View/1872921 Tue, 17 Aug 2021 22:32:54 GMT https://rip.trb.org/View/1872921 Rail Economic Contribution Study https://rip.trb.org/View/1870565 Wed, 04 Aug 2021 09:51:58 GMT https://rip.trb.org/View/1870565 Estimating Benefits of Closing Gaps in Active Transportation Networks https://rip.trb.org/View/1842753 Thu, 25 Mar 2021 21:09:54 GMT https://rip.trb.org/View/1842753 Administration of Highway and Transportation Agencies. Assessing and Communicating the Economic and Quality of Life Benefits of Transportation Infrastructure Investments: Message Testing https://rip.trb.org/View/1777137 Tue, 23 Feb 2021 11:27:12 GMT https://rip.trb.org/View/1777137 Measuring and Understanding the Relationship Between Air Service and Regional Economic Development https://rip.trb.org/View/1645871 Mon, 12 Aug 2019 21:59:12 GMT https://rip.trb.org/View/1645871 Assessing the Economic Benefits of the Transportation Infrastructure Model for Development (TIMED) Program https://rip.trb.org/View/1634280 Mon, 01 Jul 2019 21:54:11 GMT https://rip.trb.org/View/1634280 Rail and the California Economy https://rip.trb.org/View/1441915 Wed, 04 Jan 2017 10:56:37 GMT https://rip.trb.org/View/1441915 Identifying and Analyzing the Relative Advantages and Disadvantages of Public-private Partnerships and Traditional Delivery for Transport Projects https://rip.trb.org/View/1441899 Wed, 04 Jan 2017 10:56:09 GMT https://rip.trb.org/View/1441899 Analysis and Validation of Historical Transportation Investment https://rip.trb.org/View/1424388 Mon, 26 Sep 2016 10:02:16 GMT https://rip.trb.org/View/1424388 Economic Benefits and Public Transportation Expansion in Major Nevada Urban Areas https://rip.trb.org/View/1422310 Wed, 07 Sep 2016 14:56:05 GMT https://rip.trb.org/View/1422310