What is the average life of a city bus?

Based on regional and federal guidelines, the regular service life of a transit bus is 12 years. Advances in technology and a continued focus on maintenance has made Metro Transit's fleet more reliable than ever. In 2018, buses traveled an average of 7,552 miles between maintenance road call.



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Some alternatively fueled engines like propane or gasoline may need to be replaced two to three times during the normal lifecycle of a school bus. Clean-diesel engines, on the other hand, are built to last 15-20 years. The difference in engine life lies in how engines are built.

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The United States In general, most American transit systems expect their buses to have a useful life of 12 years and 250,000 miles.

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An average transit bus can fit up to 42 people, which means a full bus can remove 42 single-passenger cars from the road during a commute. A handful of full buses running every 15 minutes or so along one commute route can take up to 168 cars off the road each hour, including those cars' emissions!

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Period. Why? Diesel is the most fuel-efficient engine type on the market. Diesel outperforms other fuels in operating range.

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Diesel is the predominant technology powering public transit, school, and intercity bus services nationwide because of its safety, reliability, efficiency, durability, and now near-zero emissions.

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Propulsion. The most common power source since the 1920s has been the diesel engine. Early buses, known as trolleybuses, were powered by electricity supplied from overhead lines.

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48.9% of all bus drivers are women, while 51.1% are men. The average bus driver age is 57 years old.

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On average, a clean-diesel school bus can travel about 510 miles on a tank of diesel vs. only 270 miles on gasoline, based on the same standard-sized fuel tanks. Newer engines, like the Detroit™ DD5™ and DD8™ diesel engines, show an additional three percent increase in fuel efficiency.

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Mainly in order to maintain schedule. Traffic on the streets is highly unpredictable. There is a certain degree of uncertainty associated with travel times from one stop to another even when the bus way is grade separated from other traffic. In mixed traffic, there is no way to predict travel times at all.

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Fuel efficiency Fuel efficiencies used in this analysis were as follows: diesel bus: 4.82 miles per diesel gallon; diesel-hybrid bus: 5.84 miles per diesel gallon; natural gas bus: 4.47 miles per diesel gallon equivalent; and battery electric bus: 2.02 kWh per mile, which accounts for a 90 percent charging efficiency.

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