To overcome the lack of real-time monitoring of currentrailway cab-signal system, a new approach based on GPRS wireless access technology is proposed.
针对目前铁路机车信号系统监测存在实时性差的缺点，提出了一种基于GPRS无线网络的监测方法。
2
The two rails are not only signal lines of track circuits, but also loop current line of locomotive traction current in electrified railway block.
电力牵引区段的两条钢轨，既作为轨道电路的通道来传输信号电流，又作为牵引电流的回路来传送牵引电流。
3
This paper puts forward necessary control measures mainly through the study on causes for cracks in large volume concrete in currentrailway bridge construction.