Section 20(6) in The Bangalore Metro Railway (General) Rules, 2011
(6)(i)Local operation of points on running lines as and when required may only be undertaken by a Station Controller with the permission of the traffic controller;(ii)the crank handle used to manually operate the points is interlocked through a key which, when released by Operations Control Center controller or Station Controller, shall inhibit setting of routs over the points concerned, and such transfer of control should be acknowledged by the station controller before the local control can be activated;(iii)Some points in depots are trailable event of a route failure they need not be correctly set before a movement is authorised over them in the trailing direction. Non trailable points shall be protected by fixed Signals.
