Which vehicle is NOT subject to the visible light transmittance standard for the windshield and the driver-side and passenger-side front windows?
The windshield and the driver-side and passenger-side front windows must meet the visible light transmittance standard, but a few special-purpose vehicles named in the law are exempt (Article 49(1)3 of the Road Traffic Act). Note that being a commercial vehicle or carrying many passengers is not an exemption.
Answer: ②
Explanation
Article 49(1)3 of the Road Traffic Act bans driving a car whose windshield or driver-side and passenger-side front windows have visible light transmittance below the standard (Enforcement Decree Article 28: 70 percent for the windshield, 40 percent for the front side windows), but exempts vehicles for protecting VIPs, ambulances and funeral vehicles. Taxis, tour buses and trucks are not exempt, so they must meet the standard.
Legal basis: 도로교통법 제49조 제1항 제3호, 시행령 제28조