A sticker is not required:
A residents-parking permit for the area of the LEZ, a traders parking permit, a severely disabled-parking permit (blue or orange).
The parking permit must be placed clearly visible behind the windshield of the vehicle.
When the vehicle is demonstrably not possible to retrofit, can an exemption be granted, for a fee but only up to 31.12.2010 and under certain conditions.
Evidence that a conversion is not possible - for example, by manufacturers, TÜV
Registration Certificate Part I (motor vehicle certificate)
Traders: business registration
If self-employed: Tax proof
Plus, were the vehicle user has the principal residence or headquarters in the LEZ, but the vehicle is registered outside the LEZ, there needs to be a Declaration about the user
Plus if the vehicle user has the principal residence or place of business outside the LEZ:
For the trips, which days (or in what time frame) they are necessary, medical certificate, or for shift work, confirmation of the employer
Traders / professionals:
on which days (or in what time frame) rides are necessary to confirm the client (especially repeat customers)
For farmers / special vehicles:
Evidence that a cleaner vehicle is not economically feasible
In hardship cases:
detailed reasons, in addition to private individuals: income / pension Evidence for traders: report of an auditor confirming the Chamber of Commerce, etc.
These exemptions are listed for your guide only. They are not officially translated, and are current as of winter 2009/10. The original on the city/regional/national website is the only accurate source.