For Some Cities, Hybrid Buses Are a Path to Zero Emissions. For Others, They're a Maintenance Hassle – Next City
Muni already has a zero-emissions fleet of overhead-wire electric buses, streetcars, light rail vehicles, and cable cars; roughly half of its fleet of 1,200 vehicles emit pollutants. After studying alternative fuels as a condition of their last major diesel bus purchase in 2001, it began to add hybrid buses to its fleet in 2007. The agency eventually bought more to completely retire that diesel fleet last year. Its latest hybrids have a GPS-controlled engine that shuts off — moving entirely on electric power — in neighborhoods with high concentrations of low-income populations and poor ai...
Source: nextcity.org