TRAFFIC IMPACTS
While California has the strictest auto-emission standards in the US, the state is also
known for its freeways and heavy traffic. Traffic is a significant source of air pollution,
particularly in urban areas, where more than 50% of particulate emissions come from
traffic. Exhaust from vehicles contains a large number of toxic chemicals, including
nitrogen oxides, carbon monoxide, and benzene. Traffic exhaust also plays a role in the
formation of photochemical smog. Health effects of concern from these pollutants include
heart and lung disease, cancer, and increased mortality. to investigate and explain the following: What it is and how is it measured or defined AND how it impact's the community's health.