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Frequently asked questions about Metro’s hybrid buses
April 2009
 What is a hybrid bus?
Hybrid buses are a green alternative to traditional diesel-powered buses. Hybrids are powered both by an electric motor and a diesel engine. Hybrids use less fuel and emit less exhaust because they use electric power for acceleration. Electricity is generated by the engine and by the braking action of the bus as it slows down or stops, which is called “regenerative braking.” The result: smooth acceleration with reduced emissions.
Why is Metro getting hybrid buses?
The six hybrid buses replace six old buses that are past their useful life. Each hybrid will dramatically reduce emissions and each will save 3,000 gallons of diesel annually fuel compared to Metro’s current diesel buses. It’s all about being green and saving green.
How many hybrid buses is Metro getting?
Metro is putting six hybrid buses into service on Earth Day, April 22, 2009. More hybrids are being ordered using recently awarded stimulus funding, to be delivered in 2010.
How much does a hybrid bus cost?
A conventional diesel bus costs about $335,000 and a hybrid costs about $515,000. While the initial cost is more, hybrids save about 30% in fuel use over the 12-year useful life of the bus.
How were the hybrids funded?
The six new hybrids were funded by a combination of federal funds -- including Congestion Mitigation/Air Quality (CMAQ) and Clean Fuels funding -- with a local dollar match. The federal funding per bus ranged from 70% to 100%.
These federal funds could only be used to buy new buses. This money could not be used for Metro’s daily operations like paying driver wages or buying fuel.
 What are the benefits of hybrid buses?
There are many benefits to using hybrids:
Significant emission reductions
- 95% reduction in particulate (soot)
- 90% reduction in hydrocarbons
- 50% reduction in nitrogen oxide (NOx)
Improved passenger experience
- Reduced noise levels
- Smoother acceleration and ride
- Comfortable and environmentally friendly
Positive regional impact
- Improved air quality — a critical factor in Greater Cincinnati
- Enhanced environmental stewardship
- Reduced noise in urban environment
- Enhanced regional image
Improved fuel economy
- About 30% less fuel used
- Reduced dependence on fossil fuels
Which routes will have hybrid buses?
The first six hybrid buses will be assigned to Metro’s largest garage, serving primarily central and westside routes. Other routes will feature hybrids as more are delivered.
Do any other transit systems operate hybrid buses?
Other transit systems across the country are adding hybrid buses. In fact, about 22% of all buses currently on order in the United States are hybrids.
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