The local government objective is for the city's entire bus fleet, which is made of 15,000 diesel-powered buses, to use only renewable fuels by 2018.

In addition to routes covered by traditional diesel-powered buses, RTA has a number of electric trolley bus routes.

The main reason was the 1973 oil crisis, which had made it cheaper to run hydroelectric-powered trams than diesel-powered buses.

Police officers and firefighters pried the victims from the twisted wreckage of the diesel-powered yellow bus.

Between 1950 and 1959, the streetcars were gradually replaced by diesel-powered buses.

In 1982, the trolleybuses were replaced with conventional, diesel-powered buses.

One effect of charging was that the numbers of diesel-powered buses and taxis in the charging zone increased, and they produced more pollution than cars.

The tram system was gradually phased out between 1956 and 1962 (in favour of diesel-powered buses), with the final trams operating on 4 September 1962.

He later proposed that Winnipeg replace its diesel-powered buses with electric trolley cars, in a bid to save money and reduce harmful greenhouse gas emissions.

The tramway was replaced by trolleybuses in 1953 and was replaced in turn by diesel-powered buses in 1964.