When you perform a search, you search both through the so-called "Studies database" and through the "Standards database".

The Studies database contains reviews of studies on ex-post assessments related to air quality policy.
In particular, for each study there is a summary of the study and a note on the findings and main lessons learnt.

The "Standards database" enables a user to compare air quality related standards between various countries. More specifically, the database contains information of the following types:

• air quality standards in a range of countries;
• emission limit values within certain sectors and countries;
• standards related to vehicle emissions and fuel quality;
• emission targets (ceilings) for various pollutants in a range of countries;
• information on compliance in respect to EU directives;
• Internet links of relevance in respect to air pollution standards, air pollution ex-post studies, emission standards etc.

The database contains facts, figures and comparative tables as well as references to where the relevant information can be found.

Further details on the databases can be found in a report on the databases (PDF format, 0.3 MB).

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