by Mark Bunden
A bus that emits water instead of ex- haust fumes was today unveiled as part of London's first non-polluting fleet.
Hydrogen fuel cell buses will be used on the RV1 tourist route from Tower Gateway to Covent Garden, passing the South Bank and London Eye.
It is hoped the UK's first zero-emission route will lessen the effects of pollution, which contributes to the deaths of more than 4,300 Londoners each year.
Mayor Boris Johnson said: "The buses are a marvel of hydrogen technology, emitting only water rather than harmful pollutants. They will run through the most city's polluted part, helping to improve London's air quality.
"This is just another way our city is harnessing low-emission, pioneering public transport to improve quality of life." The first new bus will pick up passengers from December 18, with seven more added next year. They are powered with electricity generated by the fuel cell. It combines hydrogen and oxygen to produce power and emits water as a by-product. Yet more energy is harnessed as the vehicle brakes.
David Brown, TfL's managing director for surface transport, said: "This is an exciting new chapter as we embrace new technologies to build on the work we are doing to improve air quality." Read more here.
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