(1)
If fixed bench-type seats without arms are provided, the seat width per person shall be assumed to be 450 mm.
(2)
The centre-to-centre spacing between rows of bench-type seats shall be not less than 760 mm if back rests are provided, and not less than 550 mm if back rests are not provided.
(3)
A clear space of not less than 300 mm shall be provided between the back of each seat and the front of the seat immediately behind it.