Traffic on Interstate 405 in Los Angeles, California, 2012

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Courtesy of Library of Congress, Highsmith, Carol, M., "Traffic on Interstate 405, Los Angeles, California," 2012

Description 

This photograph shows traffic in Los Angeles on an interstate highway in 2012. This interstate, I-405, is a heavily traveled freeway by both people and semi-trailer trucks along its entire length. It is the busiest and most congested freeway in the United States.

Source-Dependent Questions

• Look closely at the skyline in this photo. What type of pollution do you see? What might cause this pollution?
• What problems might pollution cause for the environment?

Citation Information 

Highsmith, Carol, M., "Traffic on Interstate 405, Los Angeles, California," 2012. Courtesy of Library of Congress