Before laying out the Essentials of Interlocking, lets just understand or refresh our knowledge by the Definition of Interlocking:
"An arrangement of signals, points and appliances, operated from a panel or lever frame, so interconnected by Mechanical locking or electrical locking or both that their operation must take place in proper sequence to ensure safety".
"An arrangement of signals, points and appliances, operated from a panel or lever frame, so interconnected by Mechanical locking or electrical locking or both that their operation must take place in proper sequence to ensure safety".
