国外一般将载重汽车按重量分成三类:1.轻型载重车——载重2吨、总重3.5吨以下。该类多数是客货两用车,具有廂式车身的运货车;2.普通载重车——载重2吨、总重3.5吨～载重12吨、总重19吨。从近几年的技术发展水平看,这类车普遍为两轴车。有些总重19吨的两轴车,载重量已达到13.5～13.8吨。3.重型载重车——载重12吨、总重19吨以上。该类车多是三轴车。单车总重22吨～30 Foreign countries generally divide the trucks by weight into three categories: 1. Light-duty trucks - load 2 tons, the total weight of 3.5 tons or less. The majority of these types of passenger and goods vehicles, vans with van body; 2 ordinary truck - 2 tons of load, the total weight of 3.5 tons ~ 12 tons of load, the total weight of 19 tons. From the level of technological development in recent years, such cars are generally two-axle vehicles. Some of the total weight of 19 tons of two-axle car, carrying capacity has reached 13.5 ~ 13.8 tons. 3. Heavy-duty truck - 12 tons of load, weighing 19 tons or more. This type of car is mostly three-axis car. The total weight of bicycle is 22 tons ~ 30