The requirement for a safety inspection of a vehicle varies depending on the state or jurisdiction where the vehicle is registered.
In the United States, for example, some states require annual safety inspections while others do not require inspections at all. In some states, inspections are required every two years or every other year.
Therefore, it's important to check the regulations in your particular state or jurisdiction to determine how often a safety inspection is required for your vehicle. You can check with your state's department of motor vehicles or equivalent agency for information on inspection requirements in your area.