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/ Design of Stormwater BMPs for Surface and Groundwater Protection Based on Site-Scale Soil Properties: Phase II https://rip.trb.org/View/2706364 Wed, 27 May 2026 10:39:28 GMT https://rip.trb.org/View/2706364 Improving Vehicle Cabin Air Quality in Daily Transportation https://rip.trb.org/View/2652182 Tue, 13 Jan 2026 14:25:51 GMT https://rip.trb.org/View/2652182 Implementation of NCHRP Research Report 887 - Guidance for Underwater Installation of Filter Systems https://rip.trb.org/View/2560834 Tue, 03 Jun 2025 13:24:29 GMT https://rip.trb.org/View/2560834 Washington Metropolitan Area Transit Authority Enhanced Covid-19 Rail Car Air Filtration and Air Purification Research Demonstration https://rip.trb.org/View/2067957 Mon, 21 Nov 2022 16:26:08 GMT https://rip.trb.org/View/2067957 Transit Vehicle Enhancements to Mitigate Exposure and Strengthen Confidence in Transit for Riders, Drivers and Staff https://rip.trb.org/View/2067955 Mon, 21 Nov 2022 16:26:07 GMT https://rip.trb.org/View/2067955 2286 Compost Filter Socks for Storm Water and Erosion Control in Construction https://rip.trb.org/View/1667133 Tue, 19 Nov 2019 10:54:40 GMT https://rip.trb.org/View/1667133 Filter Systems to Produce Industrial Use Water for UDOT Maintenance Stations https://rip.trb.org/View/1570668 Wed, 28 Nov 2018 16:54:53 GMT https://rip.trb.org/View/1570668 Evaluation and optimization of engineered media amendments for contaminant removal in stormwater runoff filtration systems https://rip.trb.org/View/1530171 Thu, 02 Aug 2018 15:12:15 GMT https://rip.trb.org/View/1530171 Stormwater Management with Enhanced Tree Filter Systems https://rip.trb.org/View/1235319 Thu, 03 Jan 2013 15:27:52 GMT https://rip.trb.org/View/1235319 Performance Evaluation of Constructed Storm Water Quality Treatment Products https://rip.trb.org/View/1231879 Thu, 03 Jan 2013 14:27:52 GMT https://rip.trb.org/View/1231879