How do you quantify really high mileage. 100k-200k is nothing for a bus. 500k+ you're pushing it depending on your mechanical skills. You'll pay more for a lower mileage bus, but it will require a little less in maintenance for the first few years.
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If a school bus had an 80-gallon tank and operated with a fuel economy of about 6 miles per gallon, it could travel about 480 miles. According to the U.S. Department of Energy, the average school bus travels 12,000 miles per year4.
These standards determine the maximum age and mileage for which a bus should be used. Smith said buses are expected to last about 12-15 years and 250,000 miles under normal conditions.
Over the long haul, newer diesel engines will last 15-20 years in a fleet, while a gasoline engine may need to be replaced once or even twice during the life of a school bus. “All of these are important for fleet managers to stop and consider when choosing a new school bus,” says Hedgecock.
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.
Diesel powers over 90% of all school buses thanks to its combination of fuel safety, energy efficiency, reliability, durability, established fueling and maintenance network, range and operational flexibility, secondary markets and low acquisition and operating costs.
Most of those buses get between 6 and 9 miles per gallon. Thats about the standard for 5.9 to 8.2 Liter diesel engines. Mileage for busses is impacted by the start and stop nature of their use. Mileage for similar engines in over-the-road buses and motor homes will average a few miles per gallon more.
Type 'A' buses on the Ford chassis with the 460 gas V-8 got 5-9 MPG with the honest average closer to 5 MPG than to 9 MPG. The Type 'A' buses on the Chevy/GMC chassis with the 6.2L diesel V-8 were underpowered, slow, noisy, and not very fuel efficient. 10-14 MPG. The engines were pretty stout but underpowered in a bus.
According to the U.S. Department of Energy, the average school bus travels 12,000 miles per year 4. At the average school bus mpg, that means a single school bus would use about 1,993 gallons of fuel annually.
Public transportation gets people where they're going while emitting far fewer climate-warming greenhouse gases than private cars. The reason is simple efficiency: while cars usually carry just one or two people at a time, a bus can carry 50 or more, and a train in a large city may carry thousands.
Benefits of public transportyou don't have to worry about finding a parking space. it reduces congestion in towns and cities. using public transport is cheaper than owning and operating a car. no more sitting in traffic jams in rush hour thanks to bus lanes and other bus priority measures.
Ultimately, the general consensus may be that the flat-nose transit buses make the best conversions. A flat-nose (transit) school bus could have the engine in the front or the rear (pusher). But, there are front-engine flat-nose transit buses and rear-engine flat-nose transit buses.