I know Zero.....thats why i said "it is still dangerous" about that very issue. I myself "bumped" a car in front of me at a stop light when i glanced down for a second for the radio.
It's just that texting takes your mind/eyes off the road for even alot longer time then changing a station. And a phone call keeps one hand off the wheel, unless it's a hands free phone, which i have no trouble with.