Section 14 in The Northern India Ferries (M.P.) Rules, 1962
14.
As long as the stream, over which the ferry plies, is more than 0.91 meter deep at any point the lessee shall keep present, with 914 metres of the ferry and at all hours of the day, such number of ferrymen as may be required to work one ferry boat, but the ferry shall not be worked when the crossing is dangerous owing to floods or between sunset and sunrise.
