Section 33(7) in The Bangalore Metro Railway (General) Rules, 2011
(7)Any self-propelled maintenance vehicle which is not fitted with Automatic Train Protection equipments shall be taken on running line only if-(a)during revenue service period, it is coupled to a locomotive or other vehicle which is so equipped; or(b)during revenue service period, it is working within the limits of Engineer's Possession; or(c)during non-revenue service period, it is running on line of sight method at a speed not exceeding twenty five kilometers per hour.
