This book is aimed at undergraduate civil engineering students, though the material may provide a useful review for practitioners and graduate students in transportation. Typically, this would be for an Introduction to Transportation course, which might be taken by most students in their sophomore or junior year. Often this is the first engineering course students take, which requires a switch in thinking from simply solving given problems to formulating the problem mathematically before solving it, i.e. from straight-forward calculation often found in undergraduate Calculus to vaguer word problems more reflective of the real world.AuthorsAuthors of this book include David Levinson , Henry Liu , William Garrison , Mark Hickman , Adam Danczyk, Michael Corbett. Karen Dixon at Oregon State University contributed Flash animations developed by herself and her students linked to in this book.