Mobile Phones and Traffic

Researchers at the University of Utah Applied Cognition Laboratory have found that mobile phone usage contributes to traffic.

Here's a snip from a January 3, 2008, New York Times article:

Slower cellphone drivers may be increasing overall commuting times by 5 percent to 10 percent . . . and talking on the phone may increase each daily commuter’s travel time by 20 hours a year.

Read the entire article, Cellphone Users Slow Traffic.