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/ User Understanding of Pedestrian Hybrid Beacon Operation https://rip.trb.org/View/2399866 Tue, 02 Jul 2024 16:54:53 GMT https://rip.trb.org/View/2399866 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 PedPal Lite: An ATSC-Independent Safe Intersection Crossing App https://rip.trb.org/View/2292660 Tue, 21 Nov 2023 18:56:38 GMT https://rip.trb.org/View/2292660 Rectangular Rapid Flashing Beacons Experimental Feature Project https://rip.trb.org/View/2151373 Wed, 12 Apr 2023 18:56:41 GMT https://rip.trb.org/View/2151373 Real-Time Traffic Signal System Performance Measurement – Phase III System Integration, Intersection Deployment and Control Center Dashboard Development https://rip.trb.org/View/2118673 Fri, 17 Feb 2023 15:03:01 GMT https://rip.trb.org/View/2118673 Design and Demonstration of Pedestrian Waiting Time Countdown at Pedestrian Activated Signals https://rip.trb.org/View/1715598 Mon, 22 Jun 2020 13:15:45 GMT https://rip.trb.org/View/1715598 Guidance on Midblock Pedestrian Signals (MPS) https://rip.trb.org/View/1707196 Wed, 20 May 2020 18:51:28 GMT https://rip.trb.org/View/1707196 An Investigation of Pedestrian Signals to Reduce Intersection Crashes and Red Light Violations for Elderly Drivers https://rip.trb.org/View/1414807 Fri, 01 Jul 2016 12:41:40 GMT https://rip.trb.org/View/1414807 Increased Pedestrian Safety and Decreased Motorist Delay with a Hawk Pedestrian Signal https://rip.trb.org/View/1230988 Thu, 03 Jan 2013 14:10:00 GMT https://rip.trb.org/View/1230988