Chiang Mai is one of the most popular destinations among Chinese travellers, with many coming by car via Route R3A through the Chiang Khong checkpoint.
Tourism in Chiang Mai is booming, but so are road accidents involving Chinese drivers, which is chalked up to their poor understanding of Thai traffic law and directions.
The agencies hope Chinese direction signs and billboards will reduce the number of accidents.
Installation is scheduled for next year.
Wanasiri Morakul, deputy director-general of the the Tourism Department, said the agency planned to install QR codes at tourism venues such as Unesco World Heritage Sites and some border stations to provide tourist information and directions.
More than 150 QR code signs are expected to start installation later this year.
Ms Wanasiri said the signs would inform Chinese tourists at border stations about "dos and don'ts" in Thailand as well as traffic law.
The number of Chinese tourist arrivals to Chiang Mai increased by 50 per cent to 421,108 visitors last year.
The Tourism Council of Thailand forecasts this year Chinese tourist arrivals to Thailand will reach 7.4 million.
In the first five months, Chinese arrivals rose by 95pc to 3.27 million, while total foreign visitors increased by 24.7pc to 12.4 million.
Tour operators have complained about a lack of Chinese tour guides, but the department insists the existing 5,600 tour guides are adequate to serve international tourist arrivals.
The Tourism Department accepted that Thailand faced a shortage of tour guides for Koreans, with only 448 guides while the requirement based on arrivals is estimated at 1,292 per year.
The department has joined with the South Korean Embassy to train Thai guides in Korean.
The department announced all tour guides must wear its officially designed uniforms starting this October.
The fine is B10,000 for those violating the rule.
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