Dr. Xiaodan Xu is a research scientist in the Energy Analysis and Environmental Impacts (EAEI) Division at Berkeley Lab. She received her Ph.D. degree in Civil Engineering and Master’s degree in Statistics from Georgia Institute of Technology in 2019. Her primary research areas include travel demand modeling, freight system modeling, mobile-source emission modeling, and vehicle electrification. She has 10 years of experience in modeling and analyzing transportation systems and assessing the environmental impacts of various transportation technologies and policies. Since joining the lab in 2021, she has been the main contributor to the large-scale freight demand model (SynthFirm), a national-scale geospatial economic model (GEMS), and a national-scale passenger vehicle movement model (NAVIGAT) that supports the assessment of various aspects of transportation systems. Before joining the lab, she worked as a transit system planner intern at the Metropolitan Atlanta Rapid Transit Authority (MARTA), an ORISE fellow at Oak Ridge National Laboratory (ORNL), and an assistant research scientist at Texas A&M Transportation Institute. She has extensive experience in working with stakeholders from the public, academia, and private sectors.