All metered taxis in Thailand will be required to display three QR codes that allow passengers to verify driver information, estimate fares, rate services and file complaints, according to the Department of Land Transport.
The announcement, published on Tuesday in the Royal Gazette, is part of a campaign by the department to upgrade public transport services.
Under the new rule, public vehicles with not more than seven seats must install the additional signage to enhance transparency and strengthen service oversight.
The department said the system is intended to give passengers immediate access to essential information and provide clearer channels for both positive feedback and rapid response to complaints if needed.
The first QR code, coloured purple, must be positioned in front of the driver. It is used for driver identification and activation of their work shift through the “DLT GPS-Notice” application, which must remain active whenever the vehicle is operating for hire.
A second code, in blue, is to be placed on the left rear passenger window. This allows passengers to check driver details, assess service quality, submit praise or complaints directly to the department, and calculate a preliminary fare estimate before or during the journey.
The third code, in red, is affixed to the outside of the left rear door and is reserved for urgent complaints, such as reports of passenger refusal or other inappropriate behaviour.
Implementation will be carried out in phases. Taxis registered in Bangkok must comply from Jan 1, 2026, while those registered in other provinces will follow one year later, from Jan 1, 2027.
For vehicles registered before Jan 1, 2026, the requirement will take effect during their next scheduled vehicle inspections, with the same timelines applying: 2026 for Bangkok and 2027 for all other provinces.
