Nuclear heavy-duty dangerous goods transportation vehicles are primarily used for transporting dangerous gases packaged in independent containers (bottles). They are clearly adapted to dangerous goods category numbers 2.1 (flammable gases such as liquefied gas, acetylene, propane) and 2.2 (non flammable and non-toxic gases such as oxygen, nitrogen, carbon dioxide), and are strictly prohibited from being transported beyond the medium range. When transporting different types of gases, it is necessary to hang special warning signs for "flammable gas" or "non flammable gas", which are only suitable for steel cylinder packaging that has passed the inspection according to regulations and has UN markings, to eliminate the hidden dangers of transporting unqualified packaging.