Singapore legislation
Regulation 83
of Road Traffic (Motor Vehicles, Construction and Use) Rules
Regulation 83
Width of gangways
Subregulation 1
Subject to paragraphs (2), (3) and (4), the width of every gangway of a vehicle shall be not less than —
300 millimetres up to a height of 760 millimetres above the level of the deck of the vehicle; and
360 millimetres at heights exceeding 760 millimetres above the level of the deck of the vehicle.
Subregulation 2
A vertical line projected upwards in a vehicle from the centre line of a gangway at deck level shall, to the height prescribed in rule 84 as the height of that gangway, be laterally not less than 150 millimetres from any part of the vehicle other than the roof above the gangway.
Subregulation 3
In the case of a double-decked vehicle no part of a gangway which serves as a joint means of access from any entrance to both the upper and lower decks shall be less than 900 millimetres in width.
Subregulation 4
For the purposes of this rule, when any space in front of a seat in a vehicle is required for the accommodation of seated passengers, the space within 230 millimetres of that seat shall not be taken into account in measuring the width of a gangway.