Section 95(18) in The Coal Mines Regulations, 2011
(18)The manager shall, by an order in writing, in respect of every haulage road or roadway fix the maximum number of loaded or empty tubs to be coupled together to run as a set or train, and a notice specifying the number of tubs so fixed shall be posted prominently at the top and at all regular stopping places of the haulage road or roadway.
