A rail automaticblocksignal system based on the field bus technology is introduced, and its reliability design is explained specially.
介绍一种基于现场总线技术的铁路自动闭塞系统，并就其可靠性设计作了重点阐述。
2
The foundation of automaticblock and cab signal is track circuit.
自动闭塞和机车信号的基础是轨道电路。
3
The paper gives solutions to the problems with lighting circuit of permissive aspect of blocksignal of existing automaticblock section according to relevant specifications.