Legal analysis: the loading standard of freight vehicles is: 1, and the total mass of futures for two-axle trucks does not exceed 18000 kg, and does not exceed the total mass indicated in the driving license; 2, three-axle trucks, car trains, the total mass of goods does not exceed 27000 kg; 3, four-axle trucks, car trains, the total mass of futures does not exceed 36000 kg; 4, five-axle car train, the total mass of goods does not exceed 43000 kg; 5. The total mass of six-axle and above automobile train futures shall not exceed 49,000 kilograms; 6, tractors, agricultural vehicles, low-speed trucks, with the total quality of the driving license approved as the limited standard; 7. Vehicles with air suspension installed on refrigerated trucks, automobile trains, and special operation vehicles that meet relevant regulations are not considered as over-limit transport vehicles.

Legal basis: Article 48 of the Road Traffic Safety Law of the People's Republic of China shall conform to the approved load quality, and overloading is strictly prohibited; The length, width and height of the load shall not violate the loading requirements, and the load shall not be scattered or scattered.

Motor vehicles carrying non-decomposable and out-of-gauge articles, which affect traffic safety, shall travel at the time, route and speed specified by the traffic management department of the public security organ, and hang obvious signs. Carrying non-decomposable and out-of-gauge articles on expressways shall be carried out in accordance with the provisions of the Highway Law.

Motor vehicles carrying explosives, inflammable and explosive chemicals and toxic and radioactive dangerous goods shall, after being approved by the public security organs, run at the specified time, route and speed, hang warning signs and take necessary safety measures.