ANN ARBOR, Mich. (AP) - The U.S. government and the University of Michigan are hoping that a real-world test of cars that can talk to each other will eventually make roads safer.

The school and the U.S. Transportation Department kicked off a year-long experiment Tuesday that will involve about 2,800 vehicles driven by real people on the streets of Ann Arbor, Mich.

The cars, trucks and buses will have devices that send wireless signals to other vehicles and even traffic lights. The cars will get warnings of a possible crash. The devices also will be able to make traffic lights change to green.

The government and school are hoping the $25 Million project will lead to similar devices for all cars.