1988年修订的《铁路主要技术政策》第10条：“......货物列车重量；一般列车4000t；重载列车向5000t以上以展。站线有效长要与列车重量、列车长度相匹配,主要干线的站线有效长采用1050m标准； Article 10 of the “Major Railway Technical Policies” revised in 1988: "... cargo train weight; general train 4000t; heavy-haul train to more than 5000t for exhibition. The effective length of the station line should be the same with the train weight, train length phase Matching, the main line of the effective length of the station using 1050m standard;