Paragraph 11 Carriages
A person must not—
(a)
enter or attempt to enter a carriage which already contains the maximum permitted number of passengers specified by a notice fixed to the carriage or displayed at the station where the person entered or attempted to enter the carriage;
(b)
throw or drop anything from a carriage;
(c)
open or attempt to open the carriage doors, or enter or leave any carriage, when the carriage is outside the designated boarding and alighting areas within the stations, save in the case of an emergency or as directed by an authorised person;
(d)
enter or leave a carriage except by the proper use of the carriage doors; or
(e)
enter or leave by the carriage doors when they are closing, or force open the doors or obstruct the doors in any way.