8.—(1) Not less than 10 per cent of the seats in a regulated rail vehicle or 8 seats (whichever is the lesser number) shall be designated by signs complying with paragraph (6) as priority seats for the use of disabled persons.
(2) No priority seat may be capable of being tipped up or folded whilst the regulated rail vehicle is used for carriage.
(3) Each priority seat and the space available to its user shall comply with the specifications shown in Diagram B1 and in Diagram B2, B3 or B4 in the Schedule.
(4) Any armrest fitted to a priority seat shall be movable to the extent required to permit unrestricted access by a disabled person to that seat or any other priority seat to which access may be gained past that seat.
(5) If tables or trays (whether fixed or folding) are fitted for the use of passengers at not less than 10 per cent of the seats (other than priority seats) in a regulated rail vehicle a similar table or tray shall be fitted for the use of persons in each priority seat.
(6) There shall be a sign on or near to a priority seat indicating that disabled persons have priority for the use of that seat.