355.Private small passenger vehicles with license plates (except those using LPG or CNG) must beinspected: (A) Exempt from periodic inspection if less than 5 years old; at least once per year if 5 to 10years old; at least twice per year if over 10 years old. (B) At least 3 times per year if over 10 years old. (C)At least twice per year if less than 5 years old.