S3. Application
[CONTENT DELETED] For applicability, please see section
223 and Schedule
III to the Motor Vehicle Safety Regulations.
S4. Definitions
Chassis means the load-supporting frame structure of a motor vehicle.
(Châssis)
* Horizontal member means the structural
member of the guard that meets the configuration requirements of S5.1
of this section when the guard is installed on the vehicle according to
the installation instructions or procedures required by S5.5 of Sec. 571.223,
Rear Impact Guards. (Pièce horizontale)
Low chassis vehicle means a trailer or semitrailer having a chassis
that extends behind the rearmost point of the rearmost tires and a lower
rear surface that meets the configuration requirements of S5.1.1 through
5.1.3 of this TSD section. (Véhicule à
châssis surbaissé)
Outer or Outboard means away from the trailer centerline and toward
the side extremities of the trailer. (Extérieur)
Pulpwood trailer means a trailer that is designed exclusively
for harvesting logs or pulpwood and constructed with a skeletal frame
with no means for attachment of a solid bed, body, or container. (Remorque
pour bois à pâte)
Rear extremity means the rearmost point on a vehicle that is above
a horizontal plane located 560 mm above the ground and below a horizontal
plane located 1,900 mm above the ground when the vehicle is configured
as specified in S5.1 of this TSD section and when the vehicle's
cargo doors, tailgate, or other permanent structures are positioned as
they normally are when the vehicle is in motion. Nonstructural protrusions
such as taillights, rubber bumpers, hinges, and latches are excluded from
the determination of the rearmost point. (Extrémité arrière)
Rounded corner means a guard's outermost end that curves upward
or forward toward the front of the vehicle, or both. (Coins arrondis)
Side extremity means the outermost point on a vehicle's side that
is located above a horizontal plane 560 mm above the ground, below a horizontal
plane located 190 cm above the ground, and between a transverse vertical
plane tangent to the rear extremity of the vehicle and a transverse vertical
plane located 305 mm forward of that plane when the vehicle is configured
as specified in S5.1 of this TSD section. Non-structural
protrusions such as taillights, hinges, rubber bumpers, and latches are
excluded from the determination of the outermost point. (Extrémité
latérale)
Special purpose vehicle means a trailer or semitrailer having work-performing
equipment that, while the vehicle is in transit, resides in or moves through
the area that could be occupied by the horizontal member of the rear underride
guard, as defined by S5.1.1 through S5.1.3. (Véhicule spécialisé)
Wheels back vehicle means a trailer or semitrailer whose rearmost
axle is permanently fixed and is located such that the rearmost surface
of tires of the size recommended by the vehicle manufacturer for the vehicle
on that axle is not more than 305 mm forward of the transverse vertical
plane tangent to the rear extremity of the vehicle. (Véhicule
à roues arrière reculées)
S5. Requirements
S5.1 Installation: Vehicle Configuration
Each vehicle shall be equipped with a rear impact guard certified as
meeting Federal Motor Vehicle Safety Standard No. 223, Rear Impact Guards
(Sec. 571.223) of the Code of Federal Regulations of the United
States. When the vehicle to which the guard is attached is resting
on level ground, unloaded, with its full capacity of fuel, and with its
tires inflated and air suspension, if so equipped, pressurized in accordance
with the manufacturer's recommendations, the guard shall comply with the
requirements of S5.1.1 through S5.1.3 of this TSD section.
See Figure 1 of this TSD section.
S5.1.1 Guard width. The outermost surfaces of the horizontal member
of the guard shall extend outboard to within 100 mm of the longitudinal
vertical planes that are tangent to the side extremities of the vehicle,
but shall not extend outboard of those planes. See Figure
1 of this TSD section.
S5.1.2 Guard height. The vertical distance between the bottom
edge of the horizontal member of the guard and the ground shall not exceed
560 mm at any point across the full width of the member. Notwithstanding
this requirement, guards with rounded corners may curve upward within
255 mm of the longitudinal vertical planes that are tangent to the side
extremities of the vehicle. See Figure 1 of this
TSD section.
S5.1.3 Guard rear surface. At any height 560 mm or more above
the ground, the rearmost surface of the horizontal member of the guard
shall be located as close as practical to a transverse vertical plane
tangent to the rear extremity of the vehicle, but no more than 305 mm
forward of that plane. Notwithstanding this requirement, the horizontal
member may extend rearward of the plane, and guards with rounded corners
may curve forward within 255 mm of the longitudinal vertical planes that
are tangent to the side extremities of the vehicle.
Guards shall be attached to the vehicle's chassis by the vehicle manufacturer
in accordance with the installation instructions or procedures provided
pursuant to S5.5 of Standard No. 223, Rear Impact Guards (Sec. 571.223)
of the U.S. Code of Federal Regulations. The vehicle must
be of a type identified in the installation instructions as appropriate
for the guard.
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