1. Law on Road Traffic. Law No. 23/2008/QH12. Vietnam National Assembly (2008)
2. Circular of the Minister about the formats, and techniques for legal documents of the Government, the Prime Minister, Ministers, and joint legal documents. No. 25/2011/TT-BTP. Vietnam Ministry of Justice (2011)
3. Law on Promulgation of Legislative Documents. No. 80/2015/QH13. Vietnam National Assembly (2015)
4. Decree on Administrative penalties for road traffic and rail transport offences. No. 100/2019/ND-CP. Vietnam Government (2019)
5. National Technical Regulation on Traffic Signs and Signals. QCVN 41:2019/BGTVT. Vietnam Ministry of Transport (2019)