阐述了对超限货物有关概念的理解,特别是现场经常遇到的超限货物运输中检定断面和检定点等概念,介绍了与超限货物计算宽度有关的内外偏差量的计算方法。 This paper expounds the understanding of the concept of overrun cargoes, especially the concepts such as test section and verification point which are often encountered in the field of overrun cargo transportation. The calculation method of internal and external deviation related to the calculated width of overrun cargo is introduced.