Document ID: chunk:federal_register_of_legislation:F2021C00480:body:0:p8
Version: federal_register_of_legislation:F2021C00480
Segment Type: other
Provision Reference: 
Character Range: 23533–26720

may count only as one of the above mentioned number of emergency exits.
44.9.1.4.                    If the driver's compartment is not accessible from the inside of vehicle it shall have two emergency exits, both of which shall not be in the same surface; where one of the exits is a window it shall comply with the requirements set out in clause 44.9.4.2 for emergency windows.
44.9.1.5.                    A 'Service Door' with an aperture width of at least 600 mm may count as two emergency exits and a emergency window of at least 0.8 m2 area and with an aperture width of at least 1,000 mm wide may count as two emergency windows.
44.9.1.6.                    A window may serve as an emergency exit provided that it meets the emergency exit requirements.
44.9.1.7.                    Every 'Service Door' shall be capable of being easily opened from inside and from outside the vehicle when the vehicle is stationary (but not necessarily when the vehicle is moving).  However, this requirement shall not be construed as precluding the possibility of locking the door from outside, provided that the door can always be opened from the inside.
44.9.2.                          Minimum dimensions
         The three types of emergency exit set out in clause 44.9.0 shall have the following minimum dimensions:

Aperture of emergency door    Height  1,250 mm
                              Width   550 mm
Aperture of emergency window
                              Area    0.4 m2
                              Height  500 mm
                              Width   600 mm
Aperture of escape hatch
                              Area    0.4 m2
                              Width   500 mm
                              Length  600 mm

44.9.3.                          Siting of Emergency Exits
44.9.3.1.                    Each passenger compartment, deck or section shall have an emergency exit placed in three out of the following surfaces - roof, front face, rear face, 'Right‑hand Side' and 'Left‑hand Side' and, in the case of the top deck of a double deck vehicle, the floor.
44.9.3.2.                    In the case of a double deck vehicle there shall be an emergency exit in either the front face or rear face of each deck.
44.9.3.3.                    Where access between decks or sections is used as an emergency exit for each deck or section that access can be considered as one of the required surfaces.
44.9.4.                          Technical Conditions
44.9.4.1.                    Emergency doors
44.9.4.1.1.              Emergency doors shall be capable of being easily opened manually from inside and from outside.  However, this requirement shall not be construed as precluding the possibility of locking the door from the outside for the purpose of securing the vehicle when unattended, provided that the door can always be opened from the inside by the use of the normal opening mechanism.
44.9.4.1.2.              Emergency doors shall not be of the slide-in-cavity type.
44.9.4.1.3.              Emergency doors shall not be equipped with a power-operated control system unless they can be readily opened manually.
44.9.4.1.4.              The outside handles of