Motor Vehicle Safety Regulations — 104
104 (1) In this section, areas A, B and C means the areas referred to in Column I of Tables I, II, III and IV to this section when established as shown in Figures 1 and 2 of SAE Recommended Practice J903a Passenger Car Windshield Wiper Systems, (May 1966), using the angles specified in Columns III to VI of the above Tables; ( zones A, B et C ) daylight opening means the maximum unobstructed opening through the glazing surface as defined in paragraph 2.3.12 of Section E, Ground Vehicle Practice, SAE Aerospace-Automotive Drawing Standards, (September 1963); ( ouverture de jour ) glazing surface reference line means the intersection of the glazing surface and a horizontal plane 635 mm above the seating reference point, as shown in Figure 1 of SAE Recommended Practice J903a (May 1966); ( ligne de référence de la surface vitrée ) overall width means the maximum overall body width dimension W116 as defined in Section E, Ground Vehicle Practice, SAE Aerospace-Automotive Drawing Standards, (September 1963); ( largeur hors tout ) plan view reference line means, (a) in respect of vehicles with a bench type front seat, a line parallel to the longitudinal centreline of the vehicle and outboard of the centre of the steering wheel by a distance equal to 0.15 times the difference between one-half the shoulder room dimension and the steering wheel centre offset, as shown in Figure 2 of SAE Recommended Practice J903a, (May 1966); and (b) in respect of vehicles with individual front seats, (i) a line parallel to the longitudinal centreline of the vehicle which passes through the centre of the driver’s designated seating position, or (ii) a line parallel to the longitudinal centreline of the vehicle located so that the geometric centre of the 95 per cent eye range contour is positioned on the longitudinal centreline of the driver’s designated seating position; ( ligne de référence longitudinale ) shoulder room dimension means the front shoulder room dimension W3 as defined in Section E, Ground Vehicle Practice, SAE Aerospace-Automotive Drawing Standards, (September 1963); ( espace d’épaules ) 95 per cent eye range contour means the 95th percentile tangential cut-off specified in SAE Recommended Practice J941a Passenger Car Driver’s Eye Range, (August 1967). ( 95 pour cent du contour de portée visuelle ) (2) For the purposes of this section, the expressions “manikin H-point”, “manikin H-point with seat in rearmost position”, and “H-point” used in an SAE Standard or SAE Recommended Practice mean “seating reference point”. (3) Subject to subsection (3.1), every vehicle shall have a power-driven windshield wiping system that has at least two frequencies or speeds and that has, irrespective of engine speed and engine load, (a) one frequency or speed of at least 45 cycles per minute; (b) a difference of at least 15 cycles per minute between the highest frequency or speed and one of the lower frequencies or speeds; and (c) the lower frequency or speed referred to in paragraph (b) equal to at least 20 cycles per minute. (3.1) A three-wheeled vehicle that is equipped with a windshield shall have a windshield wiping system that conforms to the requirements of subsection (3). (4) Compliance with subsection (3) shall be demonstrated by testing under the conditions specified in sections 4.1.1 and 4.1.2 of SAE Recommended Practice J903a, (May 1966). (5) In the case of a passenger car or a three-wheeled vehicle, the windshield wiping system, when tested wet in accordance with SAE Recommended Practice J903a (May 1966), shall wipe the percentage of areas A, B and C of the windshield that (a) is specified in Column II of whichever of Tables I, II, III or IV to this section is applicable; and (b) is within the area bounded by a perimeter line on the glazing surface 25 mm from the edge of the daylight opening. (6) Subject to subsection (7), every vehicle shall have a windshield washing system that meets the requirements of SAE Recommended Practice J942, Passenger C