Abstract:The ongoing investigation into the determinants of alternative fuel vehicle choice is described. A stated preference vehicle choice survey was conducted for the 47 continental U.S. states, excluding California. The national survey is based on, and is an extension of, previous studies on alternative fuel vehicle choice for the state of California conducted by the University of California's Institute of Transportation Studies. Several vehicle choice models are being developed on the basis of the survey information. Preliminary model estimates using the national survey alone plus estimates for a "pooled" model using both California and national survey information are presented.