On December 2, 2019, Thailand Department of Industrial Work (DIW) issued a Notice [1], whose subject is rules, procedures, and conditions for requesting permission to transport hazardous substances. The requirements for the notification of hazardous substances transitting in Thailand were put forward in the fourth edition of the revised Hazardous Substances Act [2], which came into effect in October last year. The issuance of the Notice could help promote the implementation of the transit notification and standardize the permission licensing.