ZEZ stands for "Zero Emission Zone", which in German means "Null-Emissions-Zone". A ZEZ is a specific area in a city or region where only zero-emission vehicles are allowed. This means that only electric vehicles, hydrogen vehicles, and other alternative-powered vehicles that emit no pollutants are allowed in these zones.
The introduction of ZEZs is part of an effort to improve air quality in cities and regions and reduce the impact of air pollution on residents' health. By restricting access to these zones by vehicles with high emissions, air quality is improved.
Some cities and regions have already begun implementing ZEZs, while others have planned to do so in the near future. Examples of cities that have planned ZEZs include London, Madrid, and Paris.
It should be noted that the introduction of ZEZs not only improves air quality, but also helps to combat climate change by reducing greenhouse gas emissions. It is also a way to support the transportation transition by encouraging the use of electric vehicles and other zero-emission vehicles.