Why does the vehicle emissions test program exist?
The Illinois EPA's vehicle emissions test program improves air quality and public health.The federal Clean Air Act Amendments of 1990 requires emissions testing programs in large, metropolitan areas which do not meet certain federal air quality standards. Although Illinois has made significant strides to clean its air since the Amendments took effect, levels of air pollution in Chicago and Metro-East St. Louis areas still exceed these standards.

Why is it important to reduce emissions?
 Motor vehicle emissions are a significant source of pollution, including carbon monoxide, nitrogen oxides and hydrocarbons. Carbon monoxide is a colorless, odorless gas that may cause dizziness, difficulty in breathing and death. Hydrocarbons and nitrogen oxides combine with sunlight to form ground level ozone (smog). Ozone can aggravate health problems for people with heart disease and breathing-related diseases such as asthma and emphysema. It can be especially harmful to children and the elderly.

What vehicles are subject to vehicle emissions inspection?
 Generally, most 1996 and newer gasoline-powered passenger vehicles are subject to testing after they are four years old. 2007 model year and newer heavy duty trucks, with a manufacturer's gross vehicle weight rating (GVWR) between 8,501 and 14,000, are also subject to testing.

 What areas of the state are testable for vehicle emissions?
A. Vehicles registered in specific ZIP codes in the Northeastern Illinois and Metro-East St. Louis areas are subject to testing.

umm yea but can u also send me the pic!!