Can Smoked Taillights Pass Annual Vehicle Inspection?

2 Answers
DiArya
09/01/25 4:29am
Smoked taillights cannot pass annual vehicle inspection. Below is an introduction to the functions of automotive taillights: Red lights: 1. Position light function: At night, it allows others to judge the width of the vehicle from a distance. It lights up as soon as the position lights or headlights are turned on. 2. Brake light function: It illuminates when the brake is applied, alerting vehicles behind to avoid rear-end collisions. When the position lights are on and the brake is applied, it significantly brightens, serving the same alerting purpose. Yellow lights: 1. Turn signal function: Before turning, changing lanes, or starting, the relevant turn signal should be activated in advance as required, alerting vehicles in front and behind. At this time, the left or right yellow light will flash. 2. Hazard light function: In emergency situations such as towing, being towed, or breaking down on the road, the hazard light switch should be turned on. At this time, both yellow lights flash simultaneously, hence also called "hazard flashers". Additionally, some vehicles are equipped with fog lights at the rear. Due to the good penetration of yellow light, fog lights are designed to be yellow.
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SanBrianna
09/13/25 7:13am
My neighbor Lao Wang got into trouble last year because of those smoked taillights! His modified Civic had dark black film applied, and it just couldn't pass the light inspection during the annual check. The inspector at the testing station said the taillight's light transmittance must be over 60%. They even used a strong flashlight to check, and the red light coming through looked like it was covered in dust. In the end, he had to use alcohol to scrub off the film on the spot, and the taillights got scratched up before barely passing. A reminder to everyone: don't choose deep black films with less than 20% light transmittance—those 'electroplated black' ones on Taobao are definitely a trap. Actually, a matte light black film paired with high-brightness LED bulbs can still emit bright enough red light at night to pass the inspection.
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