Bus Futures : New Technologies for Cleaner Cities

A look at the latest innovations in fuels and engine technology in the US bus industry, this report gives transit planners, environmentalists, and government and business leaders the information they need to make bus purchase decisions that lead to cleaner air and better health for their communities. It offers a side-by-side comparison of the commercial availability, performance, emissions, safety, and costs of conventional diesel versus conventional natural gas buses. The status and emissions performance of newer technologies, such as hybrid electric-diesel, hybrid electric-natural gas, and fuel cell buses, are also discussed. The report presents a snapshot of transit agency policies, perspectives, and bus purchase trends and offerings of the major bus manufacturers.