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/ Calibration and Implementation of Highway Safety Manual Bicyclist and Pedestrian Intersection Crash Prediction Models https://rip.trb.org/View/2635921 Thu, 04 Dec 2025 08:52:41 GMT https://rip.trb.org/View/2635921 Effects of Automated Speed Enforcement on Crashes Involving Pedestrians and Bicyclists https://rip.trb.org/View/2570609 Tue, 01 Jul 2025 14:37:48 GMT https://rip.trb.org/View/2570609 Impacts of Turn Lanes on Speed and Crashes Involving Vulnerable Road Users in Urban Areas https://rip.trb.org/View/2558380 Wed, 28 May 2025 14:15:47 GMT https://rip.trb.org/View/2558380 Identifying Factors to Improve Bicycle Lane Safety in Pittsburgh, PA https://rip.trb.org/View/2440029 Sun, 13 Oct 2024 10:50:19 GMT https://rip.trb.org/View/2440029 Urban Demographic Shift of Pedestrian and Bicyclist Collisions, Equity, and Police Enforcement https://rip.trb.org/View/2232673 Wed, 23 Aug 2023 20:51:48 GMT https://rip.trb.org/View/2232673 Pedestrian vs. Bicyclist Fatality Patterns of Geographic/Demographic Shift https://rip.trb.org/View/2231971 Sun, 20 Aug 2023 15:34:18 GMT https://rip.trb.org/View/2231971 Understanding Pedestrian and Bicyclist Safety Trends in the Post-Pandemic Era https://rip.trb.org/View/2229364 Thu, 17 Aug 2023 08:13:40 GMT https://rip.trb.org/View/2229364 Exploring the Role of Arterial Roads’ Characteristics on Pedestrian and Cyclist Crashes https://rip.trb.org/View/2229121 Wed, 16 Aug 2023 12:08:04 GMT https://rip.trb.org/View/2229121 TRC2302 - Development of Pedestrian and Bicyclist Flow Volumes and Risk Factors https://rip.trb.org/View/2215433 Wed, 19 Jul 2023 17:33:22 GMT https://rip.trb.org/View/2215433 Increase the Utilization of Proven Methodologies and Tools https://rip.trb.org/View/2093182 Tue, 03 Jan 2023 13:53:40 GMT https://rip.trb.org/View/2093182 Bicyclists vs. Right Turn Vehicles: Optimizing Design Based on Conflict Risk Data https://rip.trb.org/View/1951958 Thu, 12 May 2022 14:23:58 GMT https://rip.trb.org/View/1951958 Interactions Between Automated Vehicles and Pedestrians and Bicyclists: A Literature Review https://rip.trb.org/View/1888388 Tue, 26 Oct 2021 14:47:40 GMT https://rip.trb.org/View/1888388 Driver Behavior in the Presence of E-Scooters within Varying Infrastructure https://rip.trb.org/View/1705865 Tue, 12 May 2020 12:01:13 GMT https://rip.trb.org/View/1705865 Before and After Study of Gainesville Pedestrian-Bicyclists Connected Vehicle Pilot https://rip.trb.org/View/1631939 Thu, 20 Jun 2019 15:59:06 GMT https://rip.trb.org/View/1631939 Safety Evaluation of On-Street Bicycle Facility Design Features https://rip.trb.org/View/1628616 Sat, 08 Jun 2019 05:21:27 GMT https://rip.trb.org/View/1628616