An interlocking (IXL) is a system composed of a set of signal apparatus that prevents trains from conflicting movements by only allowing trains to receive authority to proceed, when routes have been set, lock and detected in safe combinations.

Computer Based Interlocking (also known as CBI) is the generic term for the most modern signaling interlocking products, implemented through computers rather than older technologies.

CBI ensures higher availability, reliability and safety.

Hyukshin Engineering has extensive experience of designing, manufacturing, installing CBI systems with more than 200 stations with Hyukshin CBI.