Motor Vehicle Safety Regulations — 217
l languages, except that school bus emergency exits shall be identified in accordance with the requirements of subsection (23). (20) Where a release mechanism is not located within the occupant space of an adjacent seat, a label indicating the location of the nearest release mechanism in both official languages and meeting the requirements of subsection (21) shall be placed within the occupant space. (21) The marking on every label referred to in subsections (19) and (20) shall be legible to an occupant with corrected visual acuity corresponding to a Snellen ratio of 20/40 who is a person described in (a) paragraph (22)(a), (b) or (c) when the locations described in the other two of those paragraphs are occupied; and (b) paragraph (22)(d) or (e) when the only source of light is the normal night time illumination of the bus interior and the occupant is a person described in subsection (22). (22) For the purposes of subsection (21), the following persons are described: (a) a person seated in the adjacent seat; (b) a person seated in the seat directly adjoining the adjacent seat; (c) a person standing in the aisle location that is closest to the adjacent seat; (d) a person standing in the aisle location nearest to the emergency exit when the exit has no adjacent seat; or (e) a person lying with his back against the floor opposite the roof emergency exit if the vehicle is so equipped. (23) Each school bus emergency exit provided in accordance with subsection (9) shall (a) be identified as “Emergency Door” and “ Porte de secours ” or “Emergency Exit” and “ Issue de secours ” or “ Sortie de secours ”, whichever is applicable, in letters at least 50 mm (2 in.) high of a colour that contrasts with its background located at the top of or directly above the emergency door or exit on both the inside and outside surfaces of the bus; and (b) have concise operating instructions describing the motions and, if applicable, sequence of motions necessary to unlatch and open the emergency door or exit, in letters at least 9.5 mm (3/8 in.) high of a colour that contrasts with its background, located within 150 mm (6 in.) of the release mechanism on the inside surface of the bus. (24) For the purposes of subsections (2), (13), (15), (17) and (18) (a) the vehicle shall be on a flat, horizontal surface; and (b) the temperature inside and outside shall be maintained between 20°C and 30°C (70°F and 85°F) for a period of four hours immediately preceding the tests and during the tests. (25) For the purpose of subsection (2), all windows installed in the vehicle shall be closed and latched in the manner intended for normal bus operation if latches are provided, except that to demonstrate compliance of windows installed in folding doors, the test need not be performed with the doors installed in the vehicle. (26) For the purposes of subsections (13), (15), (17) and (18), all seats, arm rests and interior objects near the windows of the vehicle shall be adjusted for normal use with the seats in the upright position. FIGURE 1 — LOW-FORCE ACCESS REGION FOR EMERGENCY EXITS HAVING ADJACENT SEATS Diagram showing Low-Force Access Region for Emergency Exists having Adjacent Seats with measurements and descriptions Notes: 1 Dimensions in mm 2 Drawing not to scale 3 * Clearance area around seat back, arm rests and other obstructions 4 The access region is the spatial volume created by the intersection of the projections of the areas shown in the two views FIGURE 2 — HIGH-FORCE ACCESS REGIONS FOR EMERGENCY EXITS HAVING ADJACENT SEATS Diagram showing High-Force Access Region for Emergency Exists having Adjacent Seats with measurements and descriptions Notes: 1 Dimensions in mm 2 Drawing not to scale 3 * Clearance area around seat back, arm rests and other obstructions 4 The access region is the spatial volume created by the intersection of the projections of the areas shown in the two views Figure 3 — Low- and High-Force Access Regions for Emergency Exits Without Adja