| http://www.w3.org/ns/prov#value | - The key numbers are zero, 40, 50 and 60.That means: No more conventionally fuelled cars in our city centres by the middle of the centuryA 40% cut in shipping emissions. 40% use of low carbon fuels in aviationAnd a 50% shift in middle distance journeys by both passengers and freight from road to rail and other modes.
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