Signal fading on radio traffic reports - USATODAY.com

CORONA, Calif. — For more than 20 years, Mike Nolan was known to radio listeners as the "eye in the sky." He flew over Southern California freeways in his single-engine plane, reporting on the nation's worst traffic.

These days, he broadcasts about traffic snarls and lurking gridlock without leaving the ground — without even leaving his home in this Los Angeles suburb. Sitting in a chair behind computer monitors and a television, Nolan gathers traffic data and broadcasts live on two radio stations a day...