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The importance of the line between Dhaka and Chittagong increased
immediately after the partition of India in 1947 as this connects the capital
city of Dhaka and the principal port city of Chittagong. To meet the needs for
the speed and density of the traffic, signalling on the section were modernized
in phases starting from the early sixties. The entire section between Dhaka-Chittagong
is provided with colour light signalling & relay interlocking with tokenless
block working. Double wire upper quadrant mechanical signalling is provided
in sections Tongi-Mymensingh, Akhaura-Sylhet, Santahar-Bonarpara & Khulna-Darsana,
Relay interlocking system exists at three major stations in West Zone viz. Parbatipur,
Ishurdi & Santahar and at six stations in Mymensingh-Jamalpur section in
East Zone. Most important & busy level crossing gates are also provided
with interlocking system including approach warning & road signal. Replacement
and modernization
works of 7 stations from Jamtail to Moladuli have been converted to solid state
interlocking signalling system. Besides this, 14 stations color light inerlocking
from Paksey to Darshona Junctions is in pipe line.
On the contrany, 22 stations in Akhauara - Sylhat section have been taken in
hand to modernize with computerized signalling and interlocking system.
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