"I have a hands-free device but haven't used it," she said.

Of course, talking while driving, even via a hands-free device, is not to be recommended.

The law also requires the use of hands-free cellular devices while driving.

And why are hands-free devices any better if people still have to dial the phone?

But now uses a hands-free device in the car.

He said Verizon also wanted the law to take effect in three years, to give the company time to provide its customers with hands-free devices.

Use a hands-free device, which places more distance between the phone and the head of the user.

"They were doing a hopping business providing people with the hands-free device."

Whether the driver was talking on a hands-free device or a hand-held, the risk remained the same, the study said.

Cases involving cells phones, including hands-free devices, were not included.