Vehicles are allowed in for 6 years from the date of first registration. Euro 3 vehicles 8 years from date of first registration. See table below. This means that:
All heavy, diesel-powered lorries and buses.
red - Environmental Zone for buses and garbage trucks in Helsinki
green – Heavy Traffic Restricted Area, lorries over 12 m are forbidden
Similar signs are on the entry to each Swedish LEZ.
Vehicles that meet environmental zone rules need no stickers.
Vehicles have exemption already agreed under the rules that applied before 2007 must their exemption sticker placed prominently displayed in the windscreen.
Adapted vehicles must meet all the emissions standards of the set Euro standard. It is possible to upgrade a Euro-2 and Euro-3 vehicles to Euro-5 via retrofitting emission control devices (such as particulate trap with SCR) approved by the Swedish Transport Agency.
It is important to retrofit with equipment that conforms with the rules for the Swedish LEZs. Those vehicles with an existing permit from the previous ruling on retrofitting with just particulate traps are still allowed.
24 hours a day, 365 days a year.
The LEZ scheme is a local scheme operated by separate cities, but on a national framework. So the standards for each Swedish city are the same, see the standards outlined above.