for Transport and Environment is of the opinion that LEZs should be gradually turned into zero-emission mobility zones and complement policies promoting a switch to clean alternatives, including walking and cycling, among others. Most LEZs which are not also congestion charge zones do not change the number of vehicles entering the zone: but some LEZs (such as the one in Milan) double as congestion charge zones and thus have the potential to reduce the numbers travelling into the city. Implementation by country there are about 250 low-emission zones (LEZ), which help meet EU health-based air quality limit values. This means that vehicles may be banned from a LEZ, or in some cases charged if they enter a LEZ when their emissions are over a set level. Different vehicles may be regulated, depending on local conditions. All LEZs apply to heavy vehicles, some to diesel vans, others also to diesel and petrol cars; in Italy, motor cycles and three-wheelers are also liable to control. A publicly funded website run by a network of cities and ministries operating or preparing LEZs gives up-to-date information on LEZs, such as which cities have LEZs, the vehicle types affected, the required emissions standards and their application dates. Belgium Antwerp: Since 2017, there has been a LEZ in Antwerp, 24/7. Only diesel vehicles above Euro 3/III norm and petrol vehicles above Euro 1/I norm are allowed to enter the LEZ. Brussels: Since 2018, the entire Brussels Capital Region has been a LEZ. Only diesel vehicles above Euro 4/IV norm are allowed to enter Brussels. Since 2019 petrol or gas-powered vehicles need to be Euro 2/II or more. Ghent introduced a LEZ on 1 January 2020. China An LEZ is present in Beijing. Denmark Denmark has LEZs that are applicable to vehicles over 3.5T. In Denmark, LEZs exist in Aalborg, Aarhus, Copenhagen, Frederiksberg and Odense. Finland A LEZ is present in Helsinki. France France has LEZs in Greater Paris, Grenoble, Lyon, Paris and Strasbourg Germany In Germany, an LEZ is called an environmental zone (Umweltzone). There are currently 47 LEZs in operation or in planning in Germany. The cities of Berlin, Cologne, Hanover, Mannheim and Stuttgart started LEZs in their respective central city areas in 2008 and more cities followed in the years after. Hong Kong Since the end of 2015, the Hong Kong Government has designated three major junctions in Central, Causeway Bay and Mong Kok