On the other hand, if the trucking industry is to maintain this symbiosis with the community, it will need to tackle a number of major environmental issues which as human beings we cannot afford to ignore, from environmental problems affecting the entire planet such as global warming, to atmospheric pollution in our major cities. Trucking plays a vital role in sustaining economic activity and our modern lifestyles. However it is also a source emissions such as CO2, a factor in global warming, and of of substances such as NOx and PM that cause air pollution, and urgent measures are required to combat these effects.