The Colorado Department of Transportation has generated a buzz about its free iPhone app, "R-U-Buzzed." It helps you calculate whether you've had enough alcohol to impair your driving.
You can read about it today in the Wall Street Journal and USA Today.
How does it work? You tell your iPhone how much you weigh, how many drinks you've had and how much time you've been drinking. If that's too complicated, you've had enough!
It does the math to estimate your blood alcohol level, and tells you whether you should call a cab.
I notice on my iPhone that there are other apps that do similar things. One called "R U Drunk" costs $2.99 and claims to administer sobriety tests.
What works for you?
Bruce Siceloff reports on traffic and transportation. A News & Observer reporter, editor and blogger since 1976, he took over the