Wu, Xiatian http://orcid.org/0000-0002-4851-1323
MacKenzie, Don http://orcid.org/0000-0002-0344-2344
Article History
Accepted: 20 January 2021
First Online: 6 February 2021
Compliance with ethical standards
:
: On behalf of all authors, the corresponding author states that there is no conflict of interest.
: This paper is based on a presentation at the Transportation Research Board Annual Conference in Washington D.C. in January, 2020.