Anti Collision Devices (ACD) has been provided as a pilot
project covering 1736 Route Kilometers and 548 Locomotives on Northeast
Frontier Railway (NFR). Based on the experience of the NFR, the
specifications and design configuration were revised and the system as
evolved was tried on the electrified multiple lines automatic signaling
section of the Southern Railway in 2010-11. Operational and technical
problems noticed in Southern Railway trials are being looked into and a
new ACD Version-II after successful validation and certification will
undergo extensive conformity trials once again before implementation.
ACD works have been sanctioned on 5160 Route Kms. on Eastern, South
Eastern, East Central and East Coast Railways during last three years
and will be taken up for implementation with new ACD Version-II.