Modern rail steel contains Iron (primary), Carbon (0.6-0.8%), Manganese (0.7-1.0%), and Silicon to provide strength and durability.

Ballast (usually stones or gravel) provides a stable bed for sleepers, distributes the load of the track, and improves drainage.

A fish plate is a steel plate used to connect two rail sections by bolting them together at the joint.

CRIS (Central Rail Information System) is the IT backbone of Indian Railways, managing reservation and ticketing systems.

Indian Railways primarily use 1676 mm (5 feet 6 inches) broad gauge, which is unique to India and a few other countries.

Northern Railway covers the maximum number of states and is one of the largest zones by geographical area.

SCADA (Supervisory Control and Data Acquisition) is a system for monitoring and controlling railway infrastructure remotely.

Welded joints (including Continuous Welded Rail or CWR) are preferred in modern railways as they reduce vibration and wear.

Grade crossing gates control road traffic at level crossings to ensure safety when trains pass through.

ACSM (Axle Counting and Safety Monitoring) is a modern railway safety system for train detection.