Medha’s Electronic Interlocking System MEI 633 is a fail-safe, state-of-the-art Distributed Interlocking System. The System has been designed to CENELEC Standards to meet SIL-4 safety specification. It is based on two out of two architecture with a hot standby provision and automatic change-over facility. The System provides all the Interlocking features including Route Setting, Route Release, Point Operation, Track Occupancy Monitoring, Overlap Protection, Crank Handle Operation, Level Crossing Gate Interlocking, and provision for Block working.

Train Control System (TCS) is an advanced and cost efficient SIL4 product ensuring safety of both life and property. TCS is designed to eliminate human error on the part of loco pilot, leading to a catastrophe.

TCS comprises station TCS and Loco TCS.

Medha’s Single Section Axle Counter (SSDAC) overcome track circuit limitations in situations including - water logging or flooding, metal bridges, long block sections, yards with poor wheel shunt lines, high EMI/EMC environments, tunnels, high temperature and sunshine regions, complex and large stations and yards etc.

• 2oo2 architecture 
• Detects 2 or 3 points

Medha's BPAC system ensures that the track section is empty before permitting another train in that section, eliminates human error and controls safe movement of trains between stations. No train is permitted if there is any other train, parted train, detached wheels, rail trolley or other rail vehicle in that section.

Applicable standards include EN50121, EN50126, EN50128, EN50129, EN50159-1 & 2