Under the Motor Vehicle Management Act and its subordinate statutes, what is the inspection validity period for a non-commercial small truck (4 years old or less)?

Answer: ③ 2 years

For non-commercial light and small trucks up to 4 years old, the inspection is valid for 2 years. Once the truck is older than 4 years, the period becomes 1 year. [Enforcement Rule of the Motor Vehicle Management Act, Annex 15-2]