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Effects of Current and Proposed Charging Zone on Traffic Condition and Air Quality in London

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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Effects of Current and Proposed Charging Zone on Traffic Condition and Air Quality in London

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  1. Effects of Current and Proposed Charging Zone on Traffic Condition and Air Quality in London

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

  3. Methodology • 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

  4. Traffic condition within the Current Congestion Charging Zone

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

  6. Congestion levels within the charging zone

  7. Conclusion • 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

  8. Air Quality Within the Current Congestion Charging zone

  9. Trends in running annual mean NO2 concentrations at selected air quality monitoring sites.

  10. Mean ratings of air quality by type of site. Autumn 2002 compared to Autumn 2003

  11. Conclusion • 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.

  12. Estimation of Traffic Condition and Air Quality in Proposed Congestion Charging Zone

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

  14. Estimated Gas Emission

  15. Conclusion • 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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