How's your teen driving?

When Stephanie Green got her drivers' license, her mom surprised her with a present.

"My mom told me I was getting a cool bumper sticker, but she didn't tell me exactly what it was," says Green.

That bumper sticker, from ReportMyTeen.com, has a number to call when Stephanie drives badly.

"She thought it was a joke at first, but realized it wasn't a joke when I let her listen to the first phone call," says Stephanie's mom, Dena Hurst.

Someone caught Stephanie speeding.

Traffic accidents cause 6,000 teenage deaths each year. That's 16 every day.

Parents looking for more eyes in more places are turning to GPS tracking devices in cell phones or small black box recorders hidden under the dash.

"I can scroll down and see how fast she's going on the interstate," says Hurst while sitting at her computer.

However, what some teens see as spying, and embarrassing stickers, get mixed reviews.

"I think parents should learn to trust their kids," says one teen.

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"I think the black box, the bumper stickers are good ideas, even though I wouldn't be too thrilled," says another.

And many experts warn there is no substitute for parents spending more time in the vehicle teaching driver safety, and then enforcing certain rules with teenagers.

"Forbidding them from traveling with other teens when they're learning to drive, preventing them from using cell phones in the car, and emphasizing the importance of buckling up," are some of the tips offered by AAA President Robert Darbelnet.

Meanwhile, after a few more calls to her mom, Stephanie admits she's a better driver.

"I told her if she got another one, she was going to lose her car," says Hurst.

The bumper sticker is like always having her mom in the backseat.