Swift Transportation is installing driver-facing cameras in their company trucks. The company claims that the camera will record and save video only when an incident occurs. An incident being the truck makes a rapid maneuver, or the truck brakes hard. Then the video is saved and reviewed. But the company has the option of saving video at other times. They claim they can correct bad driving habits or detect drowsy driving.
Overdrive Magazine has an informative article you can read here.
How would you do with a camera watching every move? Would your driving habits improve?