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/ Physics-Informed Deep Learning and Governance Framework for Traffic Applications with Sparse Sensor Networks https://rip.trb.org/View/2606408 Thu, 02 Oct 2025 15:16:16 GMT https://rip.trb.org/View/2606408 BikePed Portal: Pedestrian Volume Estimation Based on Push Button Actuations from Signals Data https://rip.trb.org/View/2361978 Tue, 02 Apr 2024 13:42:35 GMT https://rip.trb.org/View/2361978 Real-Time Freeway Speed Prediction Based on Deep Learning in Connected And Autonomous Vehicles Environment https://rip.trb.org/View/1881792 Mon, 04 Oct 2021 10:56:43 GMT https://rip.trb.org/View/1881792 Development and Tech Transfer of an Integrated Robust Traffic State and Parameter Estimation and Adaptive Ramp Metering Control System https://rip.trb.org/View/1700595 Tue, 05 May 2020 09:14:15 GMT https://rip.trb.org/View/1700595 Develop Local Functional Classification VMT and AADT Estimation Method https://rip.trb.org/View/1564419 Fri, 19 Oct 2018 16:54:52 GMT https://rip.trb.org/View/1564419 Measuring Traffic Performance using Passive Sensing Technologies on Signalized Arterials https://rip.trb.org/View/1404678 Thu, 21 Apr 2016 13:23:18 GMT https://rip.trb.org/View/1404678 Establishment of Ideal Saturation Flow Rate for Intersection Level of Service Analysis for Washington DC https://rip.trb.org/View/1290479 Thu, 30 Jan 2014 01:00:58 GMT https://rip.trb.org/View/1290479 Freeway Travel Time Estimation using Existing Fixed Traffic Sensors - A Computer-Vision-Based Vehicle Matching Approach https://rip.trb.org/View/1256988 Wed, 24 Jul 2013 01:01:09 GMT https://rip.trb.org/View/1256988