Test Procedure
3.1 Applicability
The following procedure applies in determining compliance with section 301.2 of Schedule
IV to the Motor Vehicle Safety Regulations.
3.2 General Requirements
3.2.1 Where a range of conditions is specified, the vehicle shall be
capable of meeting the requirements at all points within the range.
3.2.2 A vehicle that has been subjected to a single barrier crash test
need not be subjected to further testing.
3.2.3 The parking brake shall be disengaged and the transmission shall
be in neutral. However, for paragraph 301.2(1)(b) of the Regulations,
the parking brake shall be set.
3.2.4 The tires shall be inflated to the manufacturer's specifications.
3.3 Vehicle Loading
The vehicle, including test devices and instrumentation, shall be loaded
to its unloaded vehicle mass, except for its fuel system, which shall
be loaded as specified in subsection 3.4 of this test method, in addition to the
loading requirements of paragraphs 3.3.1, 3.3.2 and 3.3.4.
3.3.1 For a passenger car, the following shall be added:
(a) the vehicle rated cargo and luggage capacity mass, secured in the
luggage area, and
(b) the appropriate number of ATDs specified in subsection 3.5 of this test method, restrained only by
the means that are installed in the vehicle for protection at the relevant
seating positions.
3.3.2 For a multipurpose passenger
vehicle, truck, or bus, with a GVWR of 4 536 kg or less, the following
shall be added:
(a) the appropriate number of ATDs specified in subsection 3.5 of this test method, restrained only by
the means that are installed in the vehicle for protection at the relevant
seating positions,
(b) the vehicle rated cargo and luggage capacity or 136 kg, whichever
is less, secured to the vehicle and distributed so that the mass on
each axle, as measured at the tire-ground interface, is in proportion
to its GAWR, and
(c) if the mass on any axle exceeds the axle's proportional share of
the test mass when the vehicle is loaded to the unloaded vehicle mass
plus ATD mass, the remaining mass shall be placed so that the mass on
that axle remains the same.
3.3.3 For the purposes of paragraph 3.3.2, the unloaded vehicle mass does not include
the mass of work performing accessories.
3.3.4 A school bus with a GVWR greater than 4 536 kg shall be
loaded to its unloaded vehicle mass plus an unsecured mass of 55 kg at
every designated seating position.
3.3.5 A multipurpose passenger vehicle, truck, or bus, other than
a school bus, with a GVWR greater than 4 536 kg shall be loaded to
its unloaded vehicle mass.
3.4 CNG Spillage
CNG spillage shall be determined by measuring fuel system pressure.
3.4.1 The high-pressure portion of the fuel system shall be pressurized
with nitrogen, which, when its temperature is stabilized at 21°C, shall
have a pressure of 20 680 kPa or the maximum operating pressure, as specified
by the vehicle manufacturer, that the fuel system is designed for, whichever
is the higher.
3.4.2 The measured change in fuel system pressure shall be appropriately
adjusted to compensate for changes in atmospheric conditions occurring
during the test. The adjusted value shall be compared with the stipulated
limit value.
3.4.3 All fuel system manual shutoff valves shall be in the open position,
to simulate the engine running, at the time of the barrier crash.
3.4.4 If the vehicle has any fuel system electric shutoff valves that
are normally open when the electrical system is activated, they shall
be open at the time of the barrier crash and shall be set to close on
impact.
3.4.5 If any electric shutoff valves prevent sensing of the pressure
in the high-pressure portion of the fuel system by the pressure transducer
when closed, they must be open for both the pre-test pressure measurement
and after the vehicle ceases motion from the impact. All such electric
shutoff valves shall be open for a period of one minute prior to completing
the pre-test fuel system pressure measurement and for 60 minutes after
the vehicle ceases motion from the impact.
3.4.6 The pressure measurement shall be made using a location on the
high-pressure portion of the fuel system that is in accordance with the
vehicle manufacturer's recommendation.
3.5 ATDs
ATDs shall be installed in accordance with the following requirements:
3.5.1 For the frontal barrier crash test, at every front outboard designated
seating position and at any other position for which the protection system
is required to be tested under section 208 of Schedule IV to the Regulations.
3.5.2 For the rear-moving barrier crash test, at every front outboard
designated seating position.
3.5.3 For the lateral moving barrier crash test, at every front outboard
designated seating position.
3.6 Lateral-Moving Barrier
Crash Test
The following additional conditions shall apply to the lateral moving
barrier crash test:
3.6.1 The moving barrier, including the impact surface, supporting structure
and carriage, shall have a mass of 1 814 kg.
3.6.2 The impact surface of the barrier shall be a vertical, rigid, flat
rectangle 1 981 mm wide and 1 524 mm high, perpendicular to its direction
of movement with its lower edge horizontal and 127 mm above the ground
surface.
3.6.3 During the entire impact sequence, the barrier shall undergo no
significant amount of dynamic or static deformation and shall absorb no
significant portion of the energy resulting from the impact, except for
energy that results in translational rebound movement of the barrier.
3.6.4 During the entire impact sequence, the barrier shall be guided
so that it travels in a straight line, with no significant lateral, vertical
or rotational movement.
3.6.5 The concrete surface upon which the vehicle is to be tested shall
be level, rigid and of uniform construction, with a skid number of 75
when measured in accordance with the American Society for Testing and
Materials Method E-274-90 at 64 km/h omitting water delivery as specified
in subsection 4.7 of that method.
3.6.6 The barrier and the test vehicle shall be positioned
such that at impact:
(a) the vehicle is at rest in its normal attitude,
(b) the barrier is travelling in a direction perpendicular to the longitudinal
axis of the vehicle at 32 km/h, and
(c) a vertical plane through the geometric centre of the barrier impact
surface and perpendicular to that surface passes through the driver's
seating reference point in the tested vehicle.
3.7 Rear-Moving Barrier Crash Test
The rear-moving barrier additional test conditions shall be those specified
in subsection 3.6, except for the conditions of paragraph 3.6.6, which shall be replaced by the following:
The barrier and test vehicle shall be positioned such that at impact:
(a) the vehicle is at rest in its normal attitude,
(b) the barrier is travelling at 48 km/h with its face perpendicular
to the longitudinal centerline of the vehicle, and
(c) a vertical plane through the geometric centre of the barrier impact
surface and perpendicular to that surface coincides with the longitudinal
centerline of the vehicle.
3.8 Moving Contoured Barrier
Crash Test
The following conditions shall apply to the moving contoured barrier
crash test:
3.8.1 The moving contoured barrier, mounted on a carriage as specified
in Figure 1, shall be of rigid construction and symmetrical
about a vertical longitudinal plane. The contoured impact surface, measuring
629 mm high by 1 981 mm wide, shall conform to the dimensions shown in
Figure 2 and be attached to the carriage as shown in
that figure. The ground clearance to the lower edge of the impact surface
shall be 133 ± 13 mm and the wheelbase shall be 3 048 ± 50 mm.
3.8.2 The complete moving contoured barrier, including the impact surface,
supporting structure and carriage, shall have a mass of 1 814 ± 23 kg
with the mass distributed such that 408 ± 11 kg is at each rear wheel
and 499 ± 11 kg is at each front wheel. The centre of gravity shall be
located 1 372 ± 38 mm rearward of the front wheel axis, in the vertical
longitudinal plane of symmetry, 401 mm above the ground. The moment of
inertia about the centre of gravity shall be:
Ix = 367 ± 18.4 kg/m²
Iz = 4 711 ± 236 kg/m²
3.8.3 The moving contoured barrier shall have a solid non-steerable
front axle and fixed rear axle attached directly to the frame rails with
no spring or other type of suspension system on any wheel. The moving
barrier assembly shall be equipped with a braking device capable of stopping
its motion.
3.8.4 The moving barrier assembly shall be equipped with
G78-15 pneumatic tires with a tread width of 152 ± 25 mm, inflated to
165 kPa.
3.8.5 The concrete surface upon which the vehicle is to
be tested shall be level, rigid and of uniform construction, with a skid
number of 75 when measured in accordance with the American Society for
Testing and Materials Method E-274-90 at 64 km/h omitting water delivery
as specified in subsection 4.7 of that method.
3.8.6 The barrier assembly shall be released from the guidance
mechanism immediately prior to impact with the vehicle.
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