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/ Utilizing ITS at International Ports to Reduce PM2.5 and NO2 Emissions https://rip.trb.org/View/2772963 Thu, 03 Sep 2026 10:09:42 GMT https://rip.trb.org/View/2772963 The Effects of Road Types and Construction Activities on Particulate Matter and Development of Best Practices for PM2.5 Reduction https://rip.trb.org/View/2604527 Mon, 29 Sep 2025 16:24:57 GMT https://rip.trb.org/View/2604527 Monitoring and Speciation of Particulate Matter Under 2.5 Microns (PM2.5) Composition across Texas Counties https://rip.trb.org/View/2593191 Tue, 26 Aug 2025 12:42:34 GMT https://rip.trb.org/View/2593191 Microplastic Air Pollution from the Wear of Vehicle Tires https://rip.trb.org/View/2582930 Tue, 05 Aug 2025 15:42:13 GMT https://rip.trb.org/View/2582930 Framework for Enhanced Model Evaluations for Project-Level Air Quality Analyses https://rip.trb.org/View/2558418 Mon, 26 May 2025 22:32:46 GMT https://rip.trb.org/View/2558418 An initial step towards the development of predictive tools to reduce pollution from transportation https://rip.trb.org/View/2442022 Thu, 17 Oct 2024 11:05:53 GMT https://rip.trb.org/View/2442022 Highway Construction Impact on Air Quality https://rip.trb.org/View/2417309 Wed, 14 Aug 2024 14:07:14 GMT https://rip.trb.org/View/2417309 ReACh: Resuspension Emissions Based on Aerodynamic Characteristics https://rip.trb.org/View/2410440 Wed, 31 Jul 2024 16:38:50 GMT https://rip.trb.org/View/2410440 A Granular Characterization of Mobility-Related Air Pollution Exposure Disparity https://rip.trb.org/View/2350714 Mon, 11 Mar 2024 21:35:36 GMT https://rip.trb.org/View/2350714 Quantify the Real Impact of Transportation Activity on Regional Ozone and Near-Road PM Concentrations https://rip.trb.org/View/1879840 Thu, 23 Sep 2021 10:51:01 GMT https://rip.trb.org/View/1879840 A Comprehensive Analysis of Air Quality in the NYC Subway System https://rip.trb.org/View/1844341 Thu, 01 Apr 2021 19:57:22 GMT https://rip.trb.org/View/1844341 Research for the AASHTO Committee on Environment and Sustainability. Task 96. Quick Reference Guide for Traffic Modelers for Generating Traffic and Activity Data for Project-Level Air Quality Analyses https://rip.trb.org/View/1705847 Mon, 11 May 2020 17:02:37 GMT https://rip.trb.org/View/1705847 Engine to Engine Variability and Derivation of Characteristic nvPM Emissions https://rip.trb.org/View/1549365 Fri, 21 Sep 2018 18:22:45 GMT https://rip.trb.org/View/1549365 Development of NAS wide and Global Rapid Aviation Air Quality https://rip.trb.org/View/1549363 Fri, 21 Sep 2018 18:22:41 GMT https://rip.trb.org/View/1549363 Analysis to Support the Development of an Engine nvPM Emissions Standard https://rip.trb.org/View/1549354 26.7N.]]> Fri, 21 Sep 2018 18:22:22 GMT https://rip.trb.org/View/1549354