Government statistics indicate that 228 people of all ages, including 44 percent under age 5, die annually in vehicle backover accidents. Federal regulators plan to announce that automakers will be required to put rearview cameras in all passenger vehicles by 2014 to help drivers see what is behind them. Adding cameras and viewing screens will cost the auto industry as much as $2.7 billion a year, or $160 to $200 a vehicle. Some of the cost is expected to be passed on to consumers through higher prices.