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/ Live Load Distribution Factors for Straight Steel I-Girder Bridges https://rip.trb.org/View/2558367 Thu, 29 May 2025 13:11:35 GMT https://rip.trb.org/View/2558367 Investigation of Hot Mix Asphalt Aging Effect on Mechanical Properties of Mixes Based on Their Binder Performance Results – Phase II https://rip.trb.org/View/2480360 Wed, 01 Jan 2025 17:04:48 GMT https://rip.trb.org/View/2480360 Ultrasonic Inspection of Reconditioned Railroad Bearing Components – Year 2 https://rip.trb.org/View/2405275 Mon, 22 Jul 2024 08:09:13 GMT https://rip.trb.org/View/2405275 Enhancement of Traffic Control Tool for Reopening of Flooded Roadways https://rip.trb.org/View/2384730 Mon, 03 Jun 2024 14:23:02 GMT https://rip.trb.org/View/2384730 Investigating the Long-Term Durability of CFRP Repairs for Bridges Under Environmental Conditions (4.16) https://rip.trb.org/View/2373993 Thu, 09 May 2024 13:59:25 GMT https://rip.trb.org/View/2373993 Advancing the Design of Flexible Ancillary Structures https://rip.trb.org/View/2342186 Wed, 21 Feb 2024 12:10:30 GMT https://rip.trb.org/View/2342186 Develop Performance of Baseplate Connections in COSS and Traffic Signal Structures https://rip.trb.org/View/2256300 Wed, 27 Sep 2023 15:54:34 GMT https://rip.trb.org/View/2256300 SPR-4841: Investigation into the Fatigue Strength and Ductility of Steel Plates with Holes made from Plasma Cutting Methods https://rip.trb.org/View/2238797 Thu, 31 Aug 2023 16:39:30 GMT https://rip.trb.org/View/2238797 Finite Element Modeling of Nurse Tanks (develop a model to predict failure) https://rip.trb.org/View/2067999 Mon, 21 Nov 2022 16:26:31 GMT https://rip.trb.org/View/2067999 Producing DynaSignal: A Novel Aerodynamic Solution for Traffic Signal Lights to Mitigate Large Vibrations and Fatigue-Related Issues in Structural Supports of Traffic Signals https://rip.trb.org/View/2046773 Mon, 17 Oct 2022 22:05:52 GMT https://rip.trb.org/View/2046773 Evaluation of Vibration Techniques for KDOT High Mast Illumination Poles https://rip.trb.org/View/2015222 Tue, 30 Aug 2022 17:01:30 GMT https://rip.trb.org/View/2015222 Design of Stud Shear Connectors in Composite Steel Bridges https://rip.trb.org/View/1854195 Thu, 27 May 2021 19:26:59 GMT https://rip.trb.org/View/1854195 Feasibility Assessment of Warm Mix Asphalt in Arkansas https://rip.trb.org/View/1751152 Tue, 10 Nov 2020 20:08:19 GMT https://rip.trb.org/View/1751152 Effectiveness of Softening Agents for Enhancing Properties of Asphalt Mixes with High RAP Contents https://rip.trb.org/View/1751149 Tue, 10 Nov 2020 20:05:47 GMT https://rip.trb.org/View/1751149 Quality Assurance (QA) Aspects of Performance Related Specifications (PRS) https://rip.trb.org/View/1660753 Tue, 22 Oct 2019 12:19:40 GMT https://rip.trb.org/View/1660753