davidraba / car-fuel-and-emissions

Car fuel consumptions and emissions 2000-2013

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Car fuel consumptions and emissions 2000-2013

Goodtables

Cleaned-up and consolidated car fuel consumption and emissions data for years 2000 to 2013. Data is published by the Vehicle Certification Agency (VCA), an Executive Agency of the United Kingdom Department for Transport.

Data is available to download at http://carfueldata.direct.gov.uk/downloads/default.aspx.

It is assumed that the data is released under the UK Open Government License.

For more details about the data, please check the information booklet http://carfueldata.direct.gov.uk/additional/aug2013/VCA-Booklet-text-Aug-2013.pdf.

Data Cleaning

The original data is published in separate CSV file starting from 2000, but the format is not consistent across years. Data has been consolidated for machine using OpenRefine. The script with the tasks performed on the 2013 CSV files is included in the scripts folder. Some example operations performed include:

  • Consolidate different field names across different years
  • Consolidate measure units for emissions data across different years
  • Set proper field types to allow indexing and analysis (eg numeric fields)
  • Normalize manufacturer and model descriptions
  • Trim excess whitespace
  • Fix encoding for special characters
  • etc

Note that the resulting dataset does not include all fields in the original data, only those deemed more relevant.

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Car fuel consumptions and emissions 2000-2013