本文件讨论:-压载物预测的经济方面；-法国和西班牙机车车辆检测方法的比较；-基础设施评估方法查阅现有文献；-关于标准化和研究的后续步骤和建议。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document discusses:- economic aspects of ballast projection;- comparison of methods in France and Spain for rolling stock;- infrastructure assessment methods;- review of available literature;- next steps and recommendations regarding standardization and research.All current amendments available at time of purchase are included with the purchase of this document.