According to the relevant regulations of the Ministry of Communications, ordinary cargo transport vehicles do not need to be hung and equipped with signs and numbers. The Provisions on Administrative Punishment of Road Transport stipulates that "if commercial passenger and freight transport vehicles fail to hang or install signs and numbers as required, they shall be fined from 200 yuan to 500 yuan", which refers to the signs and numbers that must be hung and installed in the regulations promulgated by the Ministry of Communications, the Ministry of Communications and other departments (commissions). At present, it mainly includes passenger line signs, chartered passenger signs, tourist passenger signs, taxi overhead lights, LTL line signs and dangerous goods marks and numbers. In addition, road transport management agencies at all levels shall not impose administrative penalties on road transport operators on the grounds of not hanging, installing signs and numbers. Unless otherwise stipulated by local laws and regulations, it can only be applied within its jurisdiction, and it is not allowed to impose penalties on foreign vehicles.

Transport packaging signs include signs and numbers, danger signs and warning signs.

Here are some pictures to see/note/note17697.htm.