THA Survey Interactive Data Briefs
May 2026 America Meets the Self-Driving Car Read Data Brief →
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Understanding User Needs
Fostering Multimodal Travel Options through Behavioral Interventions and Emerging Mobility Solutions
This project focuses on the practical implementation and validation of a systematic framework to progress towards transportation system goals of mobility, accessibility, and active lifestyle by leveraging the Peachtree Corners (PTC), GA, community as a living lab. The framework integrates behavioral interventions and emerging mobility solutions to address challenges related to low adoption of multimodal
From Perception to Policy: Measuring Road Driver Behavior and Public Support for Autonomous Truck Regulation
This project will investigate how human drivers respond when sharing the road with autonomous trucks, generating behavioral evidence to guide public policy, risk communication, and regulatory design for the safe and economically beneficial deployment of freight automation. Truck automation is projected to deliver major efficiency and safety gains to the United States economy by addressing
Examining Heterogeneity in Public Attitudes Toward Shared Autonomous Vehicles by User Experience
The rapid development of autonomous driving (also called self-driving or driverless) technologies is transforming the landscape of urban mobility. As a byproduct of autonomous vehicles, the emerging Shared Autonomous Vehicles (SAVs) are increasingly positioned at the intersection of economic viability and competitiveness, time savings and productivity, technological innovation, and transport policy. SAVs are fleet-operated, fully
Understanding Household Vehicle Fleet Evolution
The composition of the U.S. vehicle fleet is changing rapidly in response to emerging technologies, evolving consumer preferences, and shifting prices. Larger vehicles are becoming increasingly popular, with SUVs and trucks representing nearly ¾ of new vehicle sales in 2024. At the same time, consumers are choosing more fuel-efficient vehicles to reduce their operating costs.
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Understanding Transportation Investment Priorities in Suburban Communities
Over the past several decades, suburbs have become home to a majority of Americans, experiencing significant growth, especially in Sun Belt metropolitan regions. Characterized by low-density land use and separated residential and commercial zones, suburban communities face substantial transportation challenges due to heavy reliance on private automobiles. This auto-dependency has led to increased congestion, safety
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Are We Ready? Evaluating Evacuation Preparedness, Behavior, and Vulnerability During Wildfires in Washington
As wildfires intensify across the western United States, communities in the wildland-urban interface face growing risks to life, infrastructure, and mobility. Wildfire evacuations, often occurring under rapidly changing conditions with limited warning, require coordinated responses informed by real-world human behavior. However, current evacuation planning models often rely on assumptions that do not reflect the variability
Opportunities and Limits of Individual Behavioral Changes: Phase I
Individual travel behavior changes such as changing from driving to non-car-based modes of transportation can have overarching implications at the system level in reducing congestion and improving the mobility for all. And yet, individual behavioral changes are hard due to a variety of personal and system-level factors. Efforts to change individual travel behaviors have been
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Do Millennials and Zoomers Participate in Teleactivities More and Travel Less Than Older Generations?
This project seeks to bridge two lines of inquiry, both concerning the future trajectory of travel behavior. The first one explores shifts in travel patterns amid the rise of home-based teleactivities – defined here as activities traditionally conducted outside the home but increasingly performed at home through digital technological applications, such as working from home,
Development of Demand Estimation Methodology for On-street Shared Paths
This is a human behavioral study designed to develop methodology to predict demand for on-street bicycle, scooter, and pedestrian facilities. The current design guidance for on-street bicycle, scooter, and pedestrian facilities does not include specific guidance for predicting numbers of bicycle, scooter, and pedestrian users. The available guidance for such facilities suggests designers should consider
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