Motor Vehicle Safety Regulations — 223
ncluding Appendices A and B, as amended in April 1999, March 2000, July 2000, April 2001, November 2001 and May 2002, published by CSA. ( remorque-citerne ) wheels back trailer means a trailer whose rearmost axle is permanently fixed and located such that the rearmost surface of the rearmost tires of the size recommended by the trailer manufacturer for that axle is not more than 305 mm forward of the transverse vertical plane tangent to the rear extremity of the trailer. ( remorque à roues arrière reculées ) Application (2) This section applies to every trailer with a GVWR of 4 536 kg or more other than (a) a pole trailer, a pulpwood trailer, a wheels back trailer or a trailer designed to be used as temporary living quarters; (b) a low-chassis trailer; and (c) a trailer designed to interact with, or having, work-performing equipment located in or moving through the area that would be occupied by a horizontal member that meets the configuration requirements of subsections (6) to (8). Rear Impact Guard Requirement (3) Every trailer shall be equipped with a rear impact guard that meets the configuration requirements of subsections (5) to (8), as well as the applicable test requirements of subsections (9) to (12) when tested in accordance with Test Method 223 – Rear Impact Guard (December 2003). (4) Until September 1, 2007, instead of being equipped with a rear impact guard in accordance with subsection (3), at the option of the manufacturer who installs the rear impact guard, a trailer may be equipped with a rear impact guard that is installed in accordance with Technical Standards Document No. 224 Rear Impact Protection , as amended from time to time and labelled in accordance with section 571.223 of the Code of Federal Regulations of the United States, Title 49 (revised as of October 1, 2000). Configuration Requirements (5) The horizontal member of a rear impact guard shall have a cross-sectional vertical height of at least 100 mm at any point across the guard width when installed on a trailer. (6) The outermost surfaces of the horizontal member shall extend outboard to within 100 mm of the longitudinal vertical planes that are tangent to the side extremities, but shall not extend outboard of those planes. (7) When the trailer is resting on level ground, unloaded, with its full capacity of fuel, its tires inflated and its air suspension, if so equipped, pressurized in accordance with the manufacturer’s recommendations, the ground clearance shall not exceed 560 mm at any point across the full width of the horizontal member. However, rounded corners may curve upward within 255 mm of the longitudinal vertical planes that are tangent to the side extremities. (8) At any height above the ground clearance, the rearmost surface of the horizontal member shall be located as close as practicable to a transverse vertical plane tangent to the rear extremity of the trailer, and no more than 305 mm forward of that plane, as shown in Figure 1. However, the horizontal member may extend rearward of the plane. Test Requirements (9) Every rear impact guard shall demonstrate resistance to the following forces applied at the P1 and P2 test locations shown in Figure 2 by deflecting no more than 125 mm: (a) 50 000 N at test location P1 on either the left or the right side of the guard if it is symmetrical, but both sides must be independently tested if the guard is not symmetrical; and (b) 50 000 N at test location P2. (10) Subject to subsection (11), every rear impact guard shall, (a) by deflecting no more than 125 mm, demonstrate resistance to a uniform test load of at least 350 000 N, which shall be applied uniformly across the horizontal member by a uniform load application structure centred on the guard, as shown in Figure 2 of Test Method 223 – Rear Impact Guard (December 2003); (b) in the case of a guard that demonstrates resistance to a uniform test load of 700 000 N or less, other than a hydraulic guard or one installed on a tanker trailer, a