TAIPEI (Taiwan News) –Taiwan's transportation ministry announced new regulations governing the use of car window tint at a press conference on Monday.

Front windshields must have a minimum of 70% visible light transmission, with front side windows allowed a darker tint that can go no lower than 40% light transmission. The ministry said driver vision is compromised by darkly tinted windows, especially at night, affecting the safety of all vehicles and pedestrians, per CNA.

Highway Bureau Director Chen Wen-juei (陳文瑞) said at the press conference that newly licensed vehicles will be subject to the regulation next year. "Vehicles currently in use are not included in the regulations, but they may be reviewed in the future."

The Highway Bureau worked with the auto industry to conduct research and set guidelines that referenced international standards and Taiwan's climate. Japan has a similar regulation for front windshields set at 70% transmission, while regulations in the US vary, dropping to very dark tinting that allows just 20% light transmission.

Chen said that for public security reasons, taxis are prohibited from applying window tints. Chen referred to Articles 16 and 17 of the current Road Traffic Management and Penalty Act, which says violators face a fine of NT$900-1,800 (US$31-62).

Chen also recommended that car owners only select verified tint film products for their cars. To help the public confirm their window tint meets standards, the Highway Bureau has requested manufacturers of tint film products undertake testing with its Vehicle Safety Certification Center.

As of the end of June, only 12 companies (representing 39 product models) have obtained VSCC certification. Authorities expect the number of companies seeking certification will continue to rise as regulations go into effect.