David Hale is a senior transportation engineer and project manager for Leidos in the Washington DC area. Over the past seven years, he has worked at the Turner-Fairbank Highway Research Center in McLean, Virginia, carrying out task orders for the Federal Highway Administration. His technical background focuses on traffic analysis, modeling, and simulation.

Mr. Blasi joined HNTB in 2005 and serves as a project manager inthe Kansas City office. He was honored in 2019 when he was named an HNTB Associate Fellow for his firmwide leadership in transportation planning modeling. Mr. Blasi founded and leads the firmwide transportation planning modelers user group, which connects nearly 200 HNTB modelers and meets regularly to discuss topics of planning models from travel demand models to meso- and micro-simulation, transit, noise, air-quality, and safety models. He has three children, ages 8, 5, and 2.

Athina Tympakianaki received a Diploma in Production Engineering and Management and a M.S. degree in Operations Reasearch from Technical University of Crete (TUC), Chania, Greece, in 2009 and 2011, respectively. She received a Ph.D. degree in Transport Systems from KTH Royal Institute of Technology (KTH), Stockholm, Sweden, in 2018. She is at Aimsun as a Transport Scientist and Senior Scientific Software Engineer. She has 9 years ́experience as a researcher and traffic analyst with competence in calibration of traffic simulation models, in particular, the estimation of network demand. She has strong background in traffic management and control as well as in analysis of transportation data.

Gabriel Gomes is an researcher with the Institute of Transportation Studies at U.C. Berkeley and a lecturer with the Mechanical Engineering department at that same University. He has worked extensively with traffic simulation models, both microscopic and macroscopic since his doctoral work, in the early 2000s, in which he developed a ramp metering model for the I210 corridor in southern California (in VISSIM). Dr. Gomes' current interests include hybrid traffic simulation, large-scale computing, and their combined potential for solving difficult problems in traffic management.

Irene Martinez is a Ph.D. Candidate at the University of California, Irvine working under the supervision of Prof. Wenlong Jin. Before joining UC Irvine in 2017, she obtained her BSc and MSc in Civil Engineering at UPC BarcelonaTech. She also holds an MSc in Transportation Systems Engineering from the University of California, Irvine (2019). Irene is interested in traffic flow modeling and the mitigation of traffic congestion in the era of autonomous, connected, and shared mobility. Her research work has been published in Transportation Research Part B and Part C journals, and she has presented at the International Symposium on Transportation and Traffic Theory 2019, several Transportation Research Board Annual Meetings, and other conferences. Irene has received, among other awards, the "Abertis International Prize for Transportation Research in 2014" and the "Young Researchers TRA VISIONS 2018 Second place award" and several fellowships during her studies.