When a sleepy driver has trouble in keeping his eyes on the road and gets too close to another car, an alarm sound will warn the driver. If nothing is done, (1)______________________. This is a new device which will soon be tested in an experimental car in Japan. The computer warning system keeps track of a driver's condition by monitoring his heart beat with signals transmitted from a band round his wrist. (2)______________________. Each pulse in the wrist sends a signal to the computer. By analyzing the pulse rate, the computer can determine whether a driver is drunk, sleeping or ill. Devices in other parts of the car (3)_______________________. The computer will sound the alarm when a problem arises, and will automatically stop the car if the driver ignores the warning.
