汽车载重量 meaning in English

carload lot

With the expansion of reformation and opening policy , transportation trade in our country has developed very quickly . traffic is heavy and the load of vehicle is growing , which greatly exceeds the value of highway vehicle . so some roads have to be used over its design parameter and some bridges are damaged
随着我国改革开放的不断深入，交通运输业有了突飞猛进的发展，公路交通量和汽车载重量日益增加，远远超出了当年的设计计算值，致使公路桥梁遭到了不同程度的破坏，但仍在超负荷使用，改造和加固这些超限服役的桥梁迫在眉睫，如何找出一条既合理，又省钱，又不断交(省时)的加固方案，已是公路建设者们的一道课题。