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/ Assessing Traffic Flow and Motorcyclist Safety Outcomes Associated with Lane Filtering https://rip.trb.org/View/2720302 Thu, 02 Jul 2026 19:30:01 GMT https://rip.trb.org/View/2720302 Optimize Tradeoffs between Centerline Buffers, Lane Width, and Shoulders for Rural Undivided Highways https://rip.trb.org/View/2652072 Fri, 09 Jan 2026 16:29:38 GMT https://rip.trb.org/View/2652072 Statewide Lane Reconfiguration “Road Diet” Screening for Louisiana https://rip.trb.org/View/2394474 Tue, 18 Jun 2024 10:47:28 GMT https://rip.trb.org/View/2394474 National Investigation of the Environmental, Safety and Livability Impacts of Travel Lane Width: Evidence from 10 American Cities https://rip.trb.org/View/2331768 Thu, 01 Feb 2024 10:04:47 GMT https://rip.trb.org/View/2331768 Analysis of Lane Departure Crashes Leveraging Advanced Driver Assistive Systems (ADAS) Machine Vision Sensing Data PROBLEM https://rip.trb.org/View/2310056 Thu, 14 Dec 2023 13:52:18 GMT https://rip.trb.org/View/2310056 NCHRP Implementation Support Program. Implementing a Guide for Urban and Suburban Roadway Cross-Section Reallocation https://rip.trb.org/View/2166264 Mon, 01 May 2023 18:02:55 GMT https://rip.trb.org/View/2166264 Improve the effectiveness of safety countermeasures as well as tools that promote operational efficiency https://rip.trb.org/View/2071569 Mon, 28 Nov 2022 14:20:07 GMT https://rip.trb.org/View/2071569 Best Practices for MOT on Interstate Pavement Rehabilitation Projects https://rip.trb.org/View/2039846 Wed, 12 Oct 2022 12:57:50 GMT https://rip.trb.org/View/2039846 Equitable Deployment of Wireless Charging Lanes in Transportation Networks https://rip.trb.org/View/1876106 Fri, 03 Sep 2021 08:20:38 GMT https://rip.trb.org/View/1876106 SPR-4615: I-69 Added Travel Lanes Data Collection and Analysis https://rip.trb.org/View/1874064 Tue, 24 Aug 2021 08:11:00 GMT https://rip.trb.org/View/1874064 SPR-4517: Field Drainage Evaluation Test on I-69 Added Travel Lanes in Indiana https://rip.trb.org/View/1768729 Wed, 10 Feb 2021 12:22:41 GMT https://rip.trb.org/View/1768729 Guidelines for Selecting Lane Widths on Urban and Suburban Arterials https://rip.trb.org/View/1673345 Tue, 17 Dec 2019 12:24:30 GMT https://rip.trb.org/View/1673345 Image Processing Approaches to Traffic Situation Understanding, Risk Assessment, and Safety https://rip.trb.org/View/1636491 Thu, 11 Jul 2019 15:29:07 GMT https://rip.trb.org/View/1636491 Dynamically Adapting Driver Assistance Systems Using Driver Monitoring Technology https://rip.trb.org/View/1595406 Tue, 02 Apr 2019 11:19:13 GMT https://rip.trb.org/View/1595406 Driving Simulator Assessment of Dynamic Lane Grouping at Signalized intersections https://rip.trb.org/View/1513355 Tue, 22 May 2018 15:00:55 GMT https://rip.trb.org/View/1513355