See a teen driving badly? Just go get mom (or dad).

As Donna Graf worried about her 16-year-old son starting to drive, she wished there was someone who could watch over him the way she would--if she could always be in the car with him.

"Kids are much more afraid of their parents than the police. Getting a ticket or arrest is nothing compared with having to tell mom and dad about it," Graf said.

So Graf founded a company, Go-Get-Mom LLC, which for $79.95 gives parents a bumper sticker with a toll-free phone number to call so other drivers can report how teens are driving--good or bad--to their parents. The number is 866-464-3866, or 866-Go-Get-Mom (which has more letters than the phone number, but Go-Get-Mom said dialers add the extra number, another 6, to the end and it won't impact the call). Callers can leave a 30-second message, which goes into a call center and triggers another call to the parent's phone of record--usually a cell phone--and an e-mail within five seconds of the report call.

Graf knew her plan had worked when a month after placing the bumper sticker on her now 17-year-old son's 1992 Infiniti convertible, she got a call from a concerned woman saying her son was speeding on a street in her town, Mount Valrico, Fla.

"I called my son and asked him to pull over. I said, 'You were just screaming up Pine Crest. You have to come home.' He admitted he was probably driving too fast, and we haven't been called on him since," Graf said.

Graf said she's hoping insurance companies will offer discounts to teen drivers who put the bumper stickers on their cars. Many insurers, including State Farm, already offer discounts to teens with good grades and who complete drivers' education, said Ana Compain-Romero, a spokeswoman for State Farm, the largest automobile insurer in the United States.

State Farm, which also insures commercial vehicles, hasn't considered offering an additional discount to Go-Get-Mom participants, but it does not offer discounts to commercial vehicles that carry similar bumper stickers with "How's My Driving" toll-free numbers, Compain-Romero said.

The recent deaths of two Tampa, Fla.-area teen girls, both honor-roll students, show that "good kids" can get into trouble, too, Graf said.

"There's no social or cultural barrier to which teens will kill themselves. It is simply that they are making bad choices because they don't have the experience," Graf said.

Traffic crashes are the top cause of death among 15- to 20-year-olds, according to the American Automobile Association.