- Gao, Yang, and David Levinson. 2021. “COVID-19, Travel Time Reliability, and the Emergence of a Double-Humped Peak Period.” Findings, August. [doi].
This paper explores the travel time variance, occupancy heterogeneity level, and average network traffic flow of Minneapolis-St. Paul freeway network and determines the time-lag relationship between travel time variance and the spatio-temporal distribution of congestion (occupancy). It finds COVID-19 reduced the travel time variability of the urban freeway network and notably makes visible a double-humped peak period in the diurnal traffic flow curve.
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