Section 67 in The Delhi Metro Airport Express Line, General Rules, 2010
67. Track work and track side work which extends into traffic hours.
(1)All work which are planned to extend beyond non traffic hours into the hours when train services normally operate shall be notified at least one month before.(2)All such works shall take place within an Engineer's Possession.(3)Works which are planned to be carried out within non traffic hours without an Engineer's Possession but which are delayed by unforeseen circumstances shall be protected by an Engineer's Possession.(4)The train services on adjacent sections of the line shall be operated with appropriate caution order or other precautions as prescribed in special instructions.
