Effects of current and proposed charging zone on traffic condition and air quality in london
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Effects of Current and Proposed Charging Zone on Traffic Condition and Air Quality in London. Aims and Objectives. To investigate the effect of current congestion charging on traffic condition To investigate the effect of current congestion charging on air quality

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Presentation Transcript

Aims and objectives l.jpg
Aims and Objectives Condition and Air Quality in London

  • To investigate the effect of current congestion charging on traffic condition

  • To investigate the effect of current congestion charging on air quality

  • To estimate of traffic condition and air quality in the proposed western congestion charging zone


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Methodology Condition and Air Quality in London

  • Traffic condition

    - London Travel Report 2002-2004

    - Impact Monitoring – Second Annual Report 2004

    - Survey on South Kensington Area

  • Air Quality

    - Impact Monitoring – Second Annual Report 2004

    - Copert III v2.1



Changes in traffic entering and leaving the charging zone during charging hours 2003 vs 2002 l.jpg
Changes in traffic entering and leaving the charging zone during charging hours (2003 vs 2002)


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Congestion levels within the charging zone during charging hours (2003 vs 2002)


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Conclusion during charging hours (2003 vs 2002)

  • Reduction in traffic circulating within the charging zone (10%-15%)

  • Reduction in traffic entering and leaving the charging zone (14%-18%)

  • Changes of composition of travel

  • Changes of trip patterns


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Air Quality Within the Current Congestion Charging zone during charging hours (2003 vs 2002)


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Trends in running annual mean NO during charging hours (2003 vs 2002)2 concentrations at selected air quality monitoring sites.



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Conclusion compared to Autumn 2003

  • Elevated levels of NO2 during 2003 is largely due to 2003 are largely due to climatic condition

  • At present, not possible to detect the effect on air quality of congestion charging on air quality.



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Traffic Condition Congestion Charging Zone

  • 60% population within the proposed zone would be affected (including people traveling into the zone)


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Estimated Gas Emission Congestion Charging Zone


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Conclusion Congestion Charging Zone

  • Reduction in traffic within the proposed zone (7%)

  • Reduction in NO2 pollutant emission within the proposed zone (13.6%)

  • Not possible to estimate the effect in air quality due to several factors e.g. Climate


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