• Case study

    San Francisco is an established leader in low emission transport; it has one of the largest clean air municipal fuel fleets in the country. San Francisco’s accomplishments in the area of greening fleet vehicles include:

    • More than half of the city’s Municipal Railway (MUNI) fleet, consisting of buses and light rail, is comprised of zero-emission vehicles
    • More than 700 cleaner air vehicles (compressed natural gas, hybrid, electric)
    • More than 50 heavy duty vehicles on bio-fuel
    • 160 taxicabs are low-emission vehicles
    • Demonstration of 2 Honda FCX hydrogen-powered fuel cell vehicles through a lease arrangement - this vehicle technology produces no emissions other than pure water
    • 25 fire trucks and ambulances are currently running on biodiesel.
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  • Case study

    London is the largest city to have adopted a central area congestion charging scheme. It has led to a 20% reduction in four-wheeled traffic within the charging zone during charging hours, cutting an estimated 40-50 million litres of vehicle fuel consumption inside the zone and a total 100,000 tons CO2 emissions annually across London. The charge raises £122 M annually which is then spent on improving transport, including providing more buses, improving road safety and implementing energy efficiency in transport. The zone was further extended in February 2007, doubling its size, with initial estimates showing a 13% reduction in traffic in the new area covered. Monitoring of this extended zone has not yet been completed.

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