At what vehicle age is the inspection required twice a year?

[VeraDella]

For vehicles over 15 years old, an inspection is required twice a year. Vehicle inspection considerations include preparing all necessary procedures, inspection timing, and safety checks. The details are as follows: Prepare all necessary procedures: Such as the annual inspection application form, which must have the traffic department's seal, company stamp or personal signature and ID card copy, and must be affixed with the vehicle chassis and engine embossed stamp. Additionally, bring the vehicle registration certificate and insurance policy. Any violation records must be settled, otherwise the inspection will not be processed. Inspection timing: The inspection schedule is every two years within the first six years (new vehicles are exempt from online annual inspection), and annually after six years. The inspection month is based on the registration month indicated on the vehicle registration certificate. Safety checks: Safety checks include front and rear axle weight, foot brake, hand brake, suspension, side slip, etc., all of which use precise data to determine if the vehicle is qualified. Also checked are lights, headlight brightness, and angle. If any item fails, a re-inspection can be conducted within the specified time.