everything about rail system…

Stray DC Current

The running rails in a DC¬†electrified traction system are one of the main sources of electromagnetic disturbance to internal and external metallic structures and installations, such as civil works (viaducts … Continue reading

Track Circuit

Most railroads use track circuits to determine which sections of track are occupied by trains. These devices are actually fairly simple in design, and have been in use since 1872. … Continue reading