Research in Progress (RIP) https://rip.trb.org/ en-us Copyright © 2024. 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/ Early Understanding of Advanced Air Mobility (AAM): Public Perceptions of Opportunities and Obstacles https://rip.trb.org/View/2343958 Thu, 22 Feb 2024 16:23:25 GMT https://rip.trb.org/View/2343958 Household Demand for Clean Vehicles in California: Individual Attitudes, Current Car Ownership, and Future Car Ownership https://rip.trb.org/View/2338822 Tue, 13 Feb 2024 21:37:40 GMT https://rip.trb.org/View/2338822 Evaluating the Impacts of Age and Health on Different Aspects of Mobility and Driving Behaviors https://rip.trb.org/View/2325917 Tue, 23 Jan 2024 14:11:48 GMT https://rip.trb.org/View/2325917 Understanding Consumer Unawareness, Resistance, and Discontinuance vis-à-vis Electric Vehicles https://rip.trb.org/View/2313956 Thu, 21 Dec 2023 20:23:18 GMT https://rip.trb.org/View/2313956 Changing Markets for Commuter and Suburban Rail https://rip.trb.org/View/2309159 Wed, 13 Dec 2023 16:36:05 GMT https://rip.trb.org/View/2309159 On the Role of Perceived Safety Concerns on Public Acceptance Behavior of Autonomous Vehicles https://rip.trb.org/View/2292666 Tue, 21 Nov 2023 18:22:00 GMT https://rip.trb.org/View/2292666 Bike Lending in North America: Understanding Business Models, User Acceptance, Social Equity, and Public Safety https://rip.trb.org/View/2292798 Tue, 21 Nov 2023 16:44:59 GMT https://rip.trb.org/View/2292798 Understanding Transit User Experience and Expectations in Under-served Communities https://rip.trb.org/View/2292690 80 F or below <40 F). We ask: which capital improvements have the biggest return on investment at bus stops that might reduce the negative experience of waiting for transit? Methodologically, by relying on video/phone-based interviews with transit experts across the United States, we are interested in learning agency-side responses to effective investments at bus stops, including constraints that agencies face. We will also conduct a series of focus groups and/or interviews with bus riders, particularly those in low-income and under-served communities, to hear transit experiences and learn about the specific needs of riders. This work will be conducted in the Denver region in coordination with the Regional Transportation District. Based on this body of evidence, we will design and implement a national-wide survey, built on a choice-experiment framework, that will test tradeoffs between operational improvements (e.g., increasing frequency), various types of bus top investments (e.g., shelters, benches, ADA-compliant ramps, real time information, lighting, safety call buttons, cameras, among others), and other programmatic investments (e.g., fare-free transit). We will vary the weather attributes in the choice set to seek better insights from riders who experience daily and seasonal variations differently than automobile travelers. This approach will control respondents’ preference ordering as well as internal contradictory among preferences. By asking respondents to evaluate trade-offs, the results will better speak to preferences as well as facilitate a weighted economic benefit analysis where we can score preferences based on dollars spent. By trying to decipher how various investments impact the value of wait time, we will create a generalizable set of findings that can apply across various situations and contexts. ]]> Mon, 20 Nov 2023 16:41:51 GMT https://rip.trb.org/View/2292690 Impact of WIM-based Direct Enforcement on the Service Life of Bridges https://rip.trb.org/View/2283487 Mon, 30 Oct 2023 22:45:43 GMT https://rip.trb.org/View/2283487 Assessing the Fit and Comfort of Motorcycle Safety Gear https://rip.trb.org/View/2256362 Thu, 28 Sep 2023 11:38:47 GMT https://rip.trb.org/View/2256362 Acceptance and Adoption of Shared Autonomous Shuttles for Vulnerable Road Users: A Readiness Study https://rip.trb.org/View/2244377 Wed, 13 Sep 2023 13:32:06 GMT https://rip.trb.org/View/2244377 School Times Impact on Students Walking or Biking to School: Safe Routes to School https://rip.trb.org/View/2244267 Tue, 12 Sep 2023 12:16:25 GMT https://rip.trb.org/View/2244267 Evaluation of Gainesville Pedestrian-Bicyclists Connected Vehicle Pilot https://rip.trb.org/View/2232146 Wed, 23 Aug 2023 10:14:12 GMT https://rip.trb.org/View/2232146 Formative Research and Resources to Prevent Cannabis Impaired Driving Among Teens and Young Adults https://rip.trb.org/View/2205309 Tue, 04 Jul 2023 12:54:39 GMT https://rip.trb.org/View/2205309 Synthesis of Information Related to Transit Practices. Topic SB-39. Improving Transit Customer Perception of Personal Security https://rip.trb.org/View/2149963 Mon, 10 Apr 2023 17:18:52 GMT https://rip.trb.org/View/2149963