针对“铁建设 [2 0 0 3]4 2号文”对铁路工程定额和费用的调整 ,介绍汽车运价和运杂费计费变革的必要性 ,进而提出改变铁路工程材料价格计取方式的建议 In view of the adjustment of railway construction quotas and expenses by IRC [2003] No. 42 Document, the necessity of changing freight rates and transportation fees is introduced, and suggestions on how to change the pricing method for railway construction materials are put forward