Toyota's Lexus LS stops automatically in front of a dummy during a Toyota Motor Corp. demonstration of the pre-collision system (PCS) at its Higashi-Fuji Technical Center in Susono, southwest of Tokyo, Monday, Nov. 12, 2012. The PCS, one of the automaker's pedestrian accident countermeasures, watches out for pedestrians to avoid collisions with them. (AP Photo/Koji Sasahara) Toyota Motor Corp. is testing car safety systems that allow vehicles to communicate with each other and with the roads they are on in a just completed facility in Japan the size of three baseball stadiums.

The cars at the Intelligent Transport System site receive information from sensors and transmitters installed on the streets to minimize the risk of accidents in situations such as missing a red traffic light, cars advancing from blind spots and pedestrians crossing the street. The system also tests cars that transmit such information to each other. In a test drive for reporters Monday, the presence of a pedestrian triggered a beeping sound in the car and a picture of a person popped up on a screen in front of the driver. A picture of an arrow popped up to indicate an approaching car at an intersection. An electronic female voice said, "It's a red light," if the driver was about to ignore a red light.

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