The is the first lecture of a graduate class in fall 2010 namely "Traffic Simulation" in the field of transportation engineering. I am Shan Huang, the founder and instructor of this course, also a Ph.D. Candidate at University at Buffalo, the State University of New York. Hope you like it! My class is far from perfect but I am willing to learn and improve. The slides and my contact information can be downloaded from my personal website - www.shanhuang.net. Feel free to contact me. I look forward to receiving your comments and suggestions. I am seeking for a job in my field.