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/ Administration of Highway and Transportation Agencies. Understanding and Developing a Behavior-Based Safety Program for State DOT Employees https://rip.trb.org/View/2666774 Mon, 09 Feb 2026 20:11:13 GMT https://rip.trb.org/View/2666774 Airport Safety Culture and Its Impact on Aviation Safety Management https://rip.trb.org/View/2588327 Tue, 12 Aug 2025 10:32:01 GMT https://rip.trb.org/View/2588327 2024 AVS Safety Culture Assessment https://rip.trb.org/View/2569837 Mon, 30 Jun 2025 11:12:07 GMT https://rip.trb.org/View/2569837 Traffic Safety Culture Phase 3 https://rip.trb.org/View/2499141 Wed, 29 Jan 2025 15:23:30 GMT https://rip.trb.org/View/2499141 Kentucky Transportation Cabinet Secretary’s Office of Safety ‘Safety Academy’ https://rip.trb.org/View/2417075 Mon, 12 Aug 2024 13:26:34 GMT https://rip.trb.org/View/2417075 Factors Affecting Recruitment Retention and Safety of Commercial Drivers: Supervisory Styles, Safety Culture and Long Work Hours https://rip.trb.org/View/2379556 Tue, 14 May 2024 15:13:39 GMT https://rip.trb.org/View/2379556 Enhancing Transit Organizational Culture to Improve Employee Psychological Health and Safety, Recruitment, and Retention https://rip.trb.org/View/2307260 Wed, 13 Dec 2023 12:06:42 GMT https://rip.trb.org/View/2307260 Administration of Highway and Transportation Agencies. Harnessing the Safe System Approach to Improve Traffic Safety https://rip.trb.org/View/2054766 Tue, 01 Nov 2022 06:28:37 GMT https://rip.trb.org/View/2054766 Impact of Rail Trespasser Fatalities & Suicide on Mental Health and Safety Culture of Rail Transportation Workers https://rip.trb.org/View/1982054 Wed, 15 Jun 2022 15:42:01 GMT https://rip.trb.org/View/1982054 Institutionalizing the Safe System Approach in Transportation Planning and Programming https://rip.trb.org/View/1957094 Tue, 24 May 2022 19:37:36 GMT https://rip.trb.org/View/1957094 Highway Safety Culture Assessment through Louisiana’s Regions https://rip.trb.org/View/1851978 Wed, 12 May 2021 13:44:53 GMT https://rip.trb.org/View/1851978 Applying the Safe System Approach to Transportation Planning, Design, and Operations in the United States https://rip.trb.org/View/1842750 Wed, 24 Mar 2021 10:40:55 GMT https://rip.trb.org/View/1842750 RES2020-03: TERMINATED PROJECT - Developing Safety Measures and Thresholds for Highway Construction in Tennessee https://rip.trb.org/View/1716565 Thu, 25 Jun 2020 16:52:58 GMT https://rip.trb.org/View/1716565 Traffic Safety Culture Research Roadmap https://rip.trb.org/View/1707226 Tue, 19 May 2020 16:55:11 GMT https://rip.trb.org/View/1707226 Traffic Safety Culture - Phase 2 https://rip.trb.org/View/1664987 Tue, 05 Nov 2019 17:51:34 GMT https://rip.trb.org/View/1664987