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policy brief | May 2026
policy brief | May 2026
The Long-term Impacts of the Pandemic on Ride-hailing Use Could Have Negative Environmental Impacts

Patrick Loa, Giovanni Circella, Yongsung Lee

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published journal article | February 2026
published journal article | December 2025
Examining Post-pandemic Ride-Hailing Use in California and Its Determinants

Patrick Loa, Yongsung Lee, Giovanni Circella

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published journal article | October 2025
published journal article | August 2025
Hybrid Workers’ Activity Intensity: Post-Pandemic Comparison of Telework-Only and in-Person Workdays

Patrick Loa, Yongsung Lee, Giovanni Circella

research report | September 2024
research report | May 2024
Barriers to Reducing the Carbon Footprint of Transportation Part 2: Investigating Evolving Travel Behaviors in the Post-Pandemic Period in California

Basar Ozbilen, Siddhartha Gulhare, Keita Makino, Aurojeet Jena, Xiatian Iogansen, Patrick Loa, Yongsung Lee, Giovanni Circella

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