An Efficient, Reliable and Cost-effective Train Collision Prevention System

Technology
RAKSHA KAVACH™ is a Network of Anti-Collision Devices (ACDs) or components which include a variety of devices such as on-board (Mobile) ACDs for Locomotives and Guard vans and track-side (stationary) ACDs such as Station ACDs, Level crossing ACDs, Loco Shed ACDs, Sensor based ACDs, and ACD Repeaters. All these work on the principle of distributed control systems.

All ACDs within the ACD system communicate with each other through radio communication when they are within a range of up to 3000m. Onboard components use inputs from Global Positioning System (GPS) for determination of train location, speed, course angle of travel and time. Both mobile and stationary components of the RAKSHA KAVACH™ system exchange information and take decisions based on train working rules and embedded software to apply brakes automatically, without any input from the users.

If two ACDs are within a predefined distance and deemed to be at a risk of collision, the ACD system activates automatic braking operation to prevent collisions. RAKSHA KAVACH™ is designed to interface with almost any type of braking system of locomotives.

RAKSHA KAVACH™ provides audiovisual warning to the road users at level crossings when a train approaches. At Manned LC Gates, when approaching Loco ACD detects 'Gate Open' condition, the speed of the train / loco is regulated. It also provides warning and regulates speed in case of landslides and avalanches by integrating additional ground sensors, namely inclinometers. It does not interfere with normal working of train operations during non-dangerous conditions.