Two new versions of Defra's Emission Factor Toolkit were released this summer. Version 6.0 was released in June 2014, followed by version 6.0.1 (containing some corrections) at the beginning of July 2014. The EFT can be downloaded from the following webpage:
Details of the updates included in these latest releases are summarised on page 4 of the EFT User Guide, which is also downloadable from the location given above.
ADMS-Urban and ADMS-Roads incorporate the EFT emission factors so that emission rates can be calculated from available traffic and speed data. CERC have compiled a model update that includes the EFT version 6.0.1 emissions factors, which is available to ADMS-Urban and ADMS-Roads users with current support contracts. Please visit the CERC User Area for a download link.