Transportation accounts for more than 67% of oil consumption in the USA-more than it produces. Today, our country imports more than 54 percent of its oil, and suggested that this could increase to 75% by 2010.
According to the U.S. Federal Highway Administration, the average vehicle (car or truck) on the road today emits more than 600 pounds of air pollution each year. These pollutants (such as carbon monoxide, sulphur dioxide, nitrogen dioxide, particulate matter and) contribute to smog and many health problems. For example, smog can cause eye and respiratory tract irritation, and carbon monoxide can inhibit the ability of a person’s blood to carry oxygen to vital organs.
The average vehicle, through its combustion of fossil fuels also emit greenhouse gases. Gas-greenhouse gases like carbon dioxide, methane, nitrous oxide, hydrocarbons, chlorofluorocarbons and surround the Earth’s atmosphere as a thermal blanket, allowing the sun’s rays for heating and trap heat near the surface of the Earth. This natural greenhouse effect maintains the surface temperature averaged at about 60° F (33° C).
However, the increased use of fossil fuels during the last century has created a greater greenhouse effect, known as global warming. Transport and played a large role in this increase.
During 1990, the annual growth rate of U.S. emissions of greenhouse gases from transport an average of 1.6 per cent. In 1999, about 82 percent of U.S. emissions of greenhouse gas composed of carbon dioxide released by burning energy. The U. S. Environmental Protection Agency (EPA) estimated that each year, the average number of light vehicles in the USA 10000 pounds emissions of carbon dioxide in the air. Motor gasoline has contributed nearly 300 million tonnes of carbon dioxide, making it the largest source of U.S. emissions of carbon dioxide.
By reducing vehicle emissions, AFV and advanced technology vehicles contribute to the fight against air pollution and global climate change.