Taxis navigating around Manhattan, New York City. Photo by Ferdinand Stöhr on Unsplash

Measuring Citywide Transportation Efficiency

Doctoral students Wei Zhai and Xueyin Bai, and Dr. Zhong-Ren Peng, developed a bottom-up approach to measuring transportation network efficiency with a case study of New York City taxis. October 31, 2019 Zhai, Wei, Xueyin Bai, Zhong-Ren Peng, Chaolin Gu, “A bottom-up transportation network efficiency measuring approach: A case study of taxi efficiency in New York …

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The Change of Mobility in Poor and Wealthy Counties in the United States Amid Covid-19 Outbreak

Doctoral candidate Wei Zhai, visiting scholar Mengyang Liu and Dr. Zhong-Ren Peng visualized how foot traffic has increased or declined across the United States amid Covid-19 Outbreak. June 6, 2020 Zhai, W., Liu, M., & Peng, Z. R. (2020). Social distancing and inequality in the United States amid COVID-19 outbreak. Environment and Planning A: Economy and …

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