Final answer:
The Ontario Ministry of Transportation (MTO) is the system that tracks safety performances in Ontario, and it is responsible for the safety and compliance of vehicles and drivers.
Step-by-step explanation:
The registration system in Ontario that tracks the safety performances is the Ontario Ministry of Transportation (MTO). This provincial government department is responsible for highways, including the registration and inspection of vehicles, as well as the licensing of drivers. The MTO ensures the safety and compliance of vehicles and operators on the roads of Ontario. Other entities such as the National Highway Traffic Safety Administration (NHTSA) and Compliance, Safety, Accountability (CSA) exist in different regions and contexts. The NHTSA, for example, is an agency of the U.S. federal government and would not be responsible for tracking safety performances in Ontario.