There is a winter LEZ(10 December - 31 March each year) as an emergency measure after periods of high air pollution, and is not always in operation. When it is in operation, the emissions standards are:
Petrol and Diesel Euro 1
Two-stroke mopeds and motorcycles Euro 1
All vehicles, including motorcycles.
The LEZ is the yellow shaded area, the green line is the bypass
Has signs similar to this, a banned vehicle sign with the requirements below:
Retrofitting a certified diesel particulate trap allows entry to the LEZ. For more information see our retrofitting section.
This measure is used in the winter (10 December - 31 March) as an emergency measure after periods of high air pollution. Drivers will be informed when it is in operation.
There is currently no Italian national scheme, but regional as well as individual city schemes.
Zona a Traffico Limitato (ZTL) or Limitazioni della circolazione, the general name for all access regulation schemes, also used for Low Emission Zones.