Paragraph 31
The discharge of waste onto the track of a railway from a sanitary convenience or sink forming part of a vehicle used for the carriage of passengers on the railway, if the discharge in question does not exceed 25 litres.
The discharge of waste onto the track of a railway from a sanitary convenience or sink forming part of a vehicle used for the carriage of passengers on the railway, if the discharge in question does not exceed 25 litres.