Professor Bunch is an internationally recognized expert on marketing research,marketing science and decision and management sciences. His research interests include consumer choice behavior, choice modeling, new product development and introduction, travel behavior, and vehicle choice and alternative fuel vehicles.

Bunch has consulted on transportation issues for public utilities, the California Energy Commission and the U.S. Department of Energy. He has accessed the acceptance and potential impact of alternative fuel vehicles, the impact of telecommuting on travel and other transportation-choice issues.

He has contributed to recent advances in discrete choice modeling methods, which are used to understand and predict the choices consumers make when they must select one product from a competing set of products. Bunch is a frequent presenter at U.S. and international conference and meetings. He has published more than 25 papers in top academic journals.