An anonymous reader quotes a report from The Hill: The Obama administration released a long-awaited rule on Tuesday requiring all new vehicles to have communication technology that allows them to "talk" to each another, which officials say could prevent tens of thousands of crashes each year. The proposal calls for all new light-duty cars and trucks to eventually be equipped with vehicle-to-vehicle (V2V) technology, a safety system that enables cars to send wireless signals to each other, anticipate each other's moves and thus avoid crashes. The rule would require 100 percent of new vehicle fleets to have V2V technology within four years of the final rule's enactment. The proposal will be open for public comment for 90 days. The connected vehicle rule builds on previous work by the outgoing administration to accelerate the deployment of innovative safety technology. The Department of Transportation released the first-ever federal guidelines for driverless cars in September. "We are carrying the ball as far as we can to realize the potential of transportation technology to save lives," said Transportation Secretary Anthony Foxx. "This long-promised V2V rule is the next step in that progression. Once deployed, V2V will provide 360-degree situational awareness on the road and will help us enhance vehicle safety." Officials say V2V has the potential to mitigate 80 percent of non-impaired crashes and can interact with other crash avoidance systems, like automatic braking. V2V uses dedicated short-range radio communications to exchange messages about a car's speed, direction and location. The system uses that information from other vehicles to identify potentials risks and warn its driver. A pair of Democratic senators called on the agency to ensure that vehicles have "robust" cybersecurity and privacy protections in place before automakers deploy V2V.