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Bristol
Environmental Situation
The geography of Bristol has a major influence on air quality in the city. The basin in which Bristol is located means that when weather conditions are calm, pollution does not disperse well. However, the weather is dominated by prevailing south - westerly winds which dilute and disperse pollution from traffic in the city. Industrial pollution from Avonmouth has declined significantly in recent years and does not impact on the city centre. The vast majority of pollution experienced by citizens is from road traffic. The M4, M5 and M32 motorways enhance Bristol's economic status but are major pollution sources. Congested city streets also lead to breaches of pollution limits on arterial routes and in the city centre.
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