笔者以为,目前我国重型卡车行业用户超载比较严重,平均车速较低。而为满足超载需求,车辆自重较大,整车可靠性、耐久性尚需提高,同时,车辆难以经常处于最佳经济运行车速。针对细分市场和运输环境的车辆尚处于初级发展阶段,空气悬架、自动变速器尚未得到应用。用户对车辆的使用维护和保养相比之下显得不够重视。新材料、新工艺尚 I think, at present, China’s heavy truck industry users more serious overload, the average speed is low. In order to meet the demand of overloading, vehicles have a large self-weight, and the reliability and durability of the vehicle need to be improved. At the same time, it is difficult for the vehicle to always be in the best economic operation speed. For the market segments and transport environment is still in the early stages of development of vehicles, air suspension, automatic transmission has not yet been applied. The user does not pay enough attention to the use and maintenance of the vehicle. New materials, new technology is still