关键词: 大号码道岔, 有源应答器, 报文

Abstract: This paper fi rstly describes the setting of switchable balise group for large size turnouts and the method of sending telegrams in the high-speed railways. Then an analysis is conducted on the reasons for train speed reduction when passing through large turnouts in special scenarios such as inconsistent telegram data, insuffi  cient distance of approaching sections and short sections. Finally,  it summarizes several types of problems frequently encountered in engineering design and data compilation, and proposes the corresponding solutions, which have certain guiding signifi cance for improving the operational effi  ciency of high-speed railways.

Key words: large size turnout, switchable balise, telegram