For how many years is the premium reduction in effect after completing an approved accident prevention course?

The correct answer is three years because, in Tennessee, when a driver successfully completes an approved accident prevention course, they are eligible for a premium reduction on their auto insurance for a duration of three years. This incentive is designed to encourage safe driving practices and reduce the likelihood of accidents. The reduction helps maintain lower insurance costs for those who proactively seek to enhance their driving skills and safety awareness. The three-year timeframe is a standard across many states to provide a balance between rewarding good driving behavior while also allowing the insurer to adjust premiums based on current driving records after that period.