FMVSS 219风窗玻璃区的干扰
659
Nat’l Highway Traffic Safety Admin., DOT § 571.219
[38 FR 22391, Aug. 20, 1973, as amended at 39 FR 3554, Jan. 28, 1974; 45 FR 15181, Mar. 10, 1980;
53 FR 11288, Apr. 6, 1988; 53 FR 12529, Apr. 15, 1988]
§ 571.219 Standard No. 219; Windshield
zone intr...
659
Nat’l Highway Traffic Safety Admin., DOT § 571.219
[38 FR 22391, Aug. 20, 1973, as amended at 39 FR 3554, Jan. 28, 1974; 45 FR 15181, Mar. 10, 1980;
53 FR 11288, Apr. 6, 1988; 53 FR 12529, Apr. 15, 1988]
§ 571.219 Standard No. 219; Windshield
zone intrusion.
S1. Scope. This standard specifies lim-
its for the displacement into the wind-
shield area of motor vehicle compo-
nents during a crash.
S2. Purpose. The purpose of this
standard is to reduce crash injuries and
fatalities that result from occupants
contacting vehicle components dis-
placed near or through the windshield.
S3. Application. This standard applies
to passenger cars and to multipurpose
passenger vehicles, trucks and buses of
4,536 kilograms or less gross vehicle
weight rating. However, it does not
apply to forward control vehicles,
walk-in van-type vehicles, or to open-
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660
49 CFR Ch. V (10–1–01 Edition)§ 571.219
body-type vehicles with fold-down or
removable windshields.
S4. Definitions. Daylight Opening
(DLO) means the maximum unob-
structed opening through the glazing
surface, including reveal or garnish
moldings adjoining the surface, as
measured parallel to the outer surface
of the glazing material.
S5. Requirement. When the vehicle
travelling longitudinally forward at
any speed up to and including 48 km/h
impacts a fixed collision barrier that is
perpendicular to the line of travel of
the vehicle, under the conditions of S7,
no part of the vehicle outside the occu-
pant compartment, except windshield
molding and other components de-
signed to be normally in contact with
the windshield, shall penetrate the pro-
tected zone template, affixed according
to S6, to a depth of more than 6 mm,
and no such part of a vehicle shall pen-
etrate the inner surface of that portion
of the windshield, within the DLO,
below the protected zone defined in S6.
S6. Protected zone template.
S6.1 The lower edge of the protected
zone is determined by the following
procedure (See Figure 1).
(a) Place a 165 mm diameter rigid
sphere, with a mass of 6.8 kg in a posi-
tion such that it simultaneously con-
tacts the inner surface of the wind-
shield glazing and the surface of the in-
strument panel, including padding. If
any accessories or equipment such as
the steering control system obstruct
positioning of the sphere, remove them
for the purposes of this procedure.
(b) Draw the locus of points on the
inner surface of the windshield
contactable by the sphere across the
width of the instrument panel. From
the outermost contactable points, ex-
tend the locus line horizontally to the
edges of the glazing material.
(c) Draw a line on the inner surface
of the windshield below and 13 mm dis-
tant from the locus line.
(d) The lower edge of the protected
zone is the longitudinal projection onto
the outer surface of the windshield of
the line determined in S6.1(c).
S6.2 The protected zone is the space
enclosed by the following surfaces, as
shown in Figure 1:
(a) The outer surface of the wind-
shield in its precrash configuration.
(b) The locus of points 76 mm out-
ward along perpendiculars drawn to
each point on the outer surface of the
windshield.
(c) The locus of lines forming a 45°
angle with the outer surface of the
windshield at each point along the top
and side edges of the outer surface of
the windshield and the lower edge of
the protected zone determined in S6.1,
in the plane perpendicular to the edge
at that point.
S6.3 A template is cut or formed
from Styrofoam, type DB, cut cell, to
the dimensions of the zone as deter-
mined in S6.2. The template is affixed
to the windshield so that it delineates
the protected zone and remains affixed
throughout the crash test.
S7. Test conditions. The requirement
of S5. shall be met under the following
conditions:
S7.1 The protected zone template is
affixed to the windshield in the manner
described in S6.
S7.2 The hood, hood latches, and
any other hood retention components
are engaged prior to the barrier crash.
S7.3 Adjustable cowl tops or other
adjustable panels in front of the wind-
shield are in the position used under
normal operating conditions when
windshield wiping systems are not in
use.
S7.4 The parking brake is dis-
engaged and the transmission is in neu-
tral.
S7.5 Tires are inflated to the vehicle
manufacturer’s specifications.
S7.6 The fuel tank is filled to any
level from 90 to 95 per cent of capacity.
S7.7 The vehicle, including test de-
vices and instrumentation, is loaded as
follows:
(a) Except as specified in S7.6, a pas-
senger car is loaded to its unloaded ve-
hicle weight plus its rated cargo and
luggage capacity weight, secured in the
luggage area, plus a 50th-percentile
test dummy as specified in part 572 of
this chapter at each front outboard
designated seating position and at any
other position whose protection system
is required to be tested by a dummy
under the provisions of Standard No.
208. Each dummy is restrained only by
means that are installed for protection
at its seating position.
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661
Nat’l Highway Traffic Safety Admin., DOT § 571.220
(b) Except as specified in S7.6, a mul-
tipurpose passenger vehicle, truck or
bus is loaded to its unloaded vehicle
weight, plus 136 kg or its rated cargo
and luggage capacity, whichever is
less, secured to the vehicle, plus a 50th-
percentile test dummy as specified in
part 572 of this chapter at each front
outboard designated seating postion
and at any other position whose pro-
tection system is required to be tested
by a dummy under the provisions of
Standard No. 208. Each dummy is re-
strained only by means that are in-
stalled for protection at its seating po-
sition. The load is distributed so that
the mass on each axle as measured at
the tire-ground interface is in propor-
tion to its GAWR. If the mass on any
axle when the vehicle is loaded to its
unloaded vehicle weight plus dummy
mass exceeds the axle’s proportional
share of the test mass, the remaining
mass is placed so that the mass on that
axle remains the same. For the pur-
poses of this section, unloaded vehicle
weight does not include the mass of
work-performing accessories. Vehicles
are tested to a maximum unloaded ve-
hicle weight of 2,495 kg.
[40 FR 25462, June 16, 1975, as amended at 40 FR 53033, Nov. 14, 1975; 41 FR 54946, Dec. 16, 1976;
45 FR 22046, Apr. 3, 1980; 63 FR 28946, May 27, 1998]
§ 571.220 Standard No. 220; School bus
rollover protection.
S1. Scope. This standard establishes
performance requirements for school
bus rollover protection.
S2. Purpose. The purpose of this
standard is to reduce the number of
deaths and the severity of injuries that
result from failure of the school bus
body structure to withstand forces en-
countered in rollover crashes.
S3. Applicability. This standard ap-
plies to school buses.
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