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Britain鈥檚 plans to cut levels of two traffic-related air pollutants are being
watered down. By 2005, concentrations of particles with a diameter of less than
10 micrometres were to be allowed to exceed 50 micrograms per cubic metre,
averaged over 24 hours, only four times a year. This has been changed to 35
times a year. The 2005 target for hourly average nitrogen dioxide levels is also
being relaxed, from 150 to 200 parts per billion. 鈥淭he government lacks the will
to curb traffic growth,鈥� says Tony Bosworth of Friends of the Earth.