Decision Support to Vehicle Choice

While the transport sector is an integral part of our society, influencing our way of life and our territory, it also has a major impact on our environment and climate. The transport sector accounts for almost 30% of national greenhouse gas (GHG) emissions, of which around 94% come from road transport alone. . The preponderance of road transport in national GHG emissions is explained by the dominance of road transport, which accounts for 88% of freight transport in France. and 85% of passenger transport . A second explanation is road transport's heavy dependence on oil. The majority of vehicles are powered by fossil fuels and internal combustion engines.

A road vehicle therefore benefits from a long range if it is powered by a fossil fuel with a high energy density. However, the combustion of a fossil fuel produces several chemical species in the exhaust gases, some of which are polluting emissions such as nitrogen oxides (NO _X ), carbon monoxide and particulate matter. A chemical species is said to be a pollutant if, above a certain threshold, its effect is harmful to the environment or human health. Improving air quality is therefore a key challenge for society, in order to improve the life expectancy of our citizens. Euro standards are a direct action by the European Commission to improve air quality and set pollutant emission limits that new vehicles must not exceed.

Other species emitted during fossil fuel combustion are GHG emissions such as carbon dioxide (CO ₂ ), methane or water vapor. These GHGs absorb part of the Earth's thermal infrared radiation and contribute to the greenhouse effect, a natural mechanism that regulates the Earth's surface temperature. The latest IPCC report states that...