THE EXPERIMENT: Wireless devices will allow about 2,800 cars, trucks and buses in Ann Arbor, Mich., to talk to each other. The year-long experiment on real streets will let officials gather data to find out if the devices will make roads safer.
HOW IT WORKS: Volunteers’ cars will be equipped with devices that transmit signals to other cars, warning drivers that cars in front of them are slowing or that a car might be about to blow through a stop sign or traffic light. The transmitters have a range of about 700 to 1,000 feet.
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