Presented at the National Hydrogen Association Annual Hydrogen Conference (NHA 2005), Washington, DC, March 29 - April 1, 2005 The first step, in any program of self-improvement, is admitting you have a problem. My friends and colleagues, I would like to talk to you today about two big problems....

On July 22, 2002, Governor Gray Davis signed AB 1493 into law. This law requires that the California Air Resources Board (CARB) propose rules that would reduce greenhouse gas emissions of light duty vehicles in California. The goal of this study was to provide insight into industry and consumer...

This report examines early users’ experiences with plug-in hybrid vehicles (PHEVs). At the time this study was conducted in winter and spring of 2007, PHEVs were not yet commercialized. Still, Americans were becoming aware of PHEVs and 25 to 30 vehicles converted from hybrid electric...

Hybrid electric vehicles (HEVs) have image, or symbolic benefits, in addition to their functionality. This study examines the images that ten HEV–owning households saw in their vehicles, and the impact symbolic benefits had on these consumers’ decisions to purchase HEVs. In...

This study explores the symbolic meanings being created, appropriated, and communicated by the owners of hybrid electric vehicles. As symbolic meanings are shown to be important to hybrid electric vehicle purchase and use, understanding the meanings, as well as their construction and...

Motor vehicles are a core technology of our modern life and economy. But motor vehicles, motor fuels, and the road system unfortunately pollute our air, soil and water, depend on limited oil supplies and are implicated in warming the earth’s climate. In response, some car companies have...

Since car buyers have limited experience with fuel cell vehicles (FCVs), direct study of FCV adoption is not feasible. However, consumer behavior toward other types of electric-drive vehicles may offer clues about how the market for FCVs will develop. Research on owners of hybrid-electric...

This study of visitor bicycle use is part of a larger data collection effort conducted in Yosemite National Park during the summer of 1999. In addition to this study, the Institute of Transportation Studies at the University of California, Davis (ITS-Davis) also studied employees’ of the...

This report describes employee travel in Yosemite National Park. More specifically, it describes the travel undertaken by employees as it relates to their roles as employees. Thus, commuting to work, personal stops made in conjunction with commute trips, trips made to complete work-related...

This report provides an introduction to semiotics: the study of symbols and symbol systems. In particular, the report focuses on the symbolic meaning of automobiles, and explores why this meaning is important to consumers. Section 1 defines what a symbol is, identifies the types of symbols, and...