A new report ranks North Texans at the top of the most dangerous drivers in America.

Men's Health Magazine ranked Dallas drivers as the second most dangerous in the nation, only behind St. Louis. Fort Worth placed 12th-worst on the list.

Those cities, plus Houston, Austin, San Antonio and Lubbock all received grades of "F" in the report.

The magazine based the grades on "the rate of fatal crashes, the percentage of fatalities involving alcohol, speeding, or hit and run, and the rate of seat belt use." Other factors included the average number of years between accidents as well as laws on cellphone use while driving.

"I am absolutely not surprised. North Texas is the worst for drunk driving fatalities in the country," says Suzette Pylant, a victim's advocate for Mother's Against Drunk Driving.

M.A.D.D. is fighting for every state to require ignition interlock devices for first time drunken-driving offenders.

"It's a device that goes on your car and you have to breathe into it or your car won't start. If you have alcohol in your system, your car won't start," says Pylant.

In other states, such measures have cut the number of alcohol-related fatalities by as much as half.

Currently, Texas only requires ignition interlocks for drunk driving offenders with a 0.15 blood alcohol level or offenders with two or more convictions.