This report documents a series of five crash tests with a properly or improperly restrained child or infant test dummy (noninstrumented) in a safety seat in the right front seating position of a vehicle. In each test, a midsize sedan was crashed at a nominal impact speed of 25 mph frontally into a fixed barrier. For the properly restrained dummies, the safety seats provided excellent protection from the crash forces. For the improperly restrained dummies, protection ranged from adequate to nonexistent, depending on the type of misuse.