Moving Autoblock System (MAS) is a new train control system. It has many advantages over Fixed Autoblock System (FAS). As to the practical application of MAS, however, a lot of theoretical analyses need to be done, of which the capacity evaluation is of great importance. This paper focuses on the analysis of theoretical and practical headway models of train following operation in blocks under MAS condition. Based on the analyses, it is pointed out that MAS and FAS are quite differen in terms of headway of train following operation in blocks as well as block carrying capacity. The most significant difference is that, under MAS condition, headway of train following operation in blocks is neither fixed, nor in linear relation to train speed. According to the numerical results based on the typical parameters of rolling stocks of Chinese railway, the speed corresponding to the maximal capacity is around 70-80 km/h. It is also pointed out that a buffer coefficient should be introduced into the theoretical headway models to guarantee train operation performance.
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机译：移动自动块系统（MAS）是一款新的列车控制系统。它与固定的自动块系统（FAS）相比具有许多优点。然而，对于MAS的实际应用，需要进行许多理论分析，其中能力评估具有重要意义。本文重点介绍了在MAS条件下块块下运行的理论和实用前往模型的分析。基于分析，指出了MAS和FAS在块中操作之后的火车头部和块承载能力方面非常差异。最重要的差异是，在MAS条件下，在块中操作之后的火车头部既不是固定的，也不是线性关系与训练速度。根据基于中国铁路轧制股票典型参数的数值效果，对应于最大容量的速度约为70-80 km / h。还指出，应将缓冲系数引入理论前进模型中以保证列车运行性能。
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