Description of Dummy Features. The HYBRID III Fiftieth Percentile crash test dummy, representing the average adult male, is the most widely used dummy in frontal crash and automotive safety restraint testing.Originally, the Hybrid III 50th male was developed by General Motors for vehicle safety purposes.It has since been incorporated into the Code of Federal Regulations under Title 49, Part 572 subpart E, and is the required dummy in NHTSA’s motor vehicle safety standards.riginally, the Hybrid III 50th male was developed by General Motors for vehicle safety purposes. It has since been incorporated into the Code of Federal Regulations under Title 49, Part 572 subpart E, and is the required dummy in NHTSA’s motor vehicle safety standards.