Under the plan, the transportation department wants 10 percent of new vehicles to include rear-mounted video cameras and in-vehicle displays by the year 2012.
The National Highway Traffic Safety Administration estimates nearly 300 people are killed every year because a vehicle-backed over them.
Nearly half of those deaths involved children under five years old.
"We wouldn't buy a car if you couldn't see 20 or 30 feet going forward, but we are buying these vehicles and we can't see 20 to 30 feet plus backward," says Janette Fennell from KidsAndCars.org.
The government estimates the new requirement could have at least 95 lives a year and prevent more than 7,000 injuries every year.
