Missouri Code of State Regulations › Title 11 - DEPARTMENT OF PUBLIC SAFETY › Division 30 - Office of the Director › Chapter 1 - General Organization › Appendix A - FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 213-80 CHILD RESTRAINT SYSTEMS

Current through Register Vol. 49, No. 14, July 15, 2024
S1.
Scope.
This standard specifies
				  requirements for child restraint systems used in motor vehicles.
S2.
Purpose.
The purpose of this standard is
				  to reduce the number of children killed or injured in motor vehicle
				  crashes.
S3.
Application.
This standard applies to
				  child restraint systems for use in motor vehicles.
S4.
Definitions.
"Car bed" means a child restraint system designed to restrain
				  or position a child in the supine or prone position on a continuous flat
				  surface.
"Child restraint system" means any device, except Type I or
				  Type II seat belts, designed for use in a motor vehicle to restrain, seat, or
				  position children who weigh not more than 50 pounds.
"Contactable surface" means any child restraint system
				  surface (other than that of a belt, belt buckle, or belt adjustment hardware)
				  that may contact any part of the head or torso of the appropriate test dummy,
				  specified in S7, when a child restraint system is tested in accordance with
				  S6.1.
"Seat orientation reference line" or "SORL" means the
				  horizontal line through Point Z as illustrated in Figure 1A.
"Torso" means the portion of the body of a seated
				  anthropomorphic test dummy, excluding the thighs, that lies between the top of
				  the child restraint system seating surface and the top of the shoulders of the
				  test dummy.
S5.
Requirements.
Each child restraint
				  system shall meet the requirements in this section when, as specified, tested
				  in accordance with S6.1.
S5.1
Dynamic performance.
S5.1.1
Child restraint system integrity.
When tested in accordance with S6.1, each child restraint system shall:
(a) Exhibit no complete separation of any load bearing
				  structural element and no partial separation exposing either surfaces with a
				  radius of less than 1/4 inch or surfaces with protrusions greater than 3/8 inch
				  above the immediate adjacent surrounding contactable surface of any structural
				  element of the system;
(b) If adjustable to different positions, remain in the same
				  adjustment position during the testing as it was immediately before the
				  testing; and
(c) If a front facing child restraint system, not allow the
				  angle between the system's back support surfaces for the child and the system's
				  seating surface to be less than 45 degrees at the completion of the test.
S5.1.2
Injury criteria.
When tested in
				  accordance with S6.1, each child restraint system that, in accordance with
				  S5.5.2(f), is recommended for use by children weighing more than 20 pounds,
				  shall-
(a) Limit the resultant acceleration at the location of the
				  accelerometer mounted in the test dummy head as specified in Part 572 such that
				  the expression:
Click to view
				  image
shall not exceed 1,000, where a is the resultant acceleration
				  expressed as a multiple of g (the acceleration of gravity), and
				  t1 and t2 are any two moments
				  during the impacts.
(b) Limit the resultant acceleration at the location of the
				  accelerometer mounted in the test dummy upper thorax as specified in Part 572
				  to not more than 60g's, except for intervals whose cumulative duration is not
				  more than 3 milliseconds.
S5.1.3
Occupant excursion.
When tested in
				  accordance with S6.1 and adjusted in any position which the manufacturer has
				  not, in accordance with S5.5.2(i), specifically warned against using in motor
				  vehicles, each child restraint system shall meet the applicable excursion limit
				  requirements specified in S5.1.3.1-S5.1.3.3.
S5.1.3.1
Child restraint systems other than
				  rear-facing ones and car beds.
In the case of each child restraint
				  system other than a rear-facing child restraint system or a car bed, the test
				  dummy's torso shall be retained within the system and no portion of the test
				  dummy's head shall pass through the vertical transverse plane that is 32 inches
				  forward of point z on the standard seat assembly, measured along the center
				  SORL (as illustrated in Figure 1B), and neither knee pivot point shall pass
				  through the vertical transverse plane that is 36 inches forward of point z on
				  the standard seat assembly, measured along the center SORL.
S5.1.3.2
Rear-facing child restraint
				  systems.
In the case of each rear-facing child restraint system, all
				  portions of the test dummy's torso shall be retained within the system and no
				  portion of the target point on either side of the dummy's head shall pass
				  through the transverse orthogonal planes whose intersection contains, the
				  forward-most and top-most points on the child restraint system surfaces
				  (illustrated in Figure 1C).
S5.1.3.3
Car beds.
In the case of car beds,
				  all portions of the test dummy's head and torso shall be retained within the
				  confines of the car bed.
S5.1.4
Back support angle.
When a
				  rear-facing child restraint system is tested in accordance with S6.1, the angle
				  between the system's back support surface for the child and the vertical shall
				  not exceed 70 degrees.
S5.2
Force distribution.
S5.2.1
Minimum head support surface- child restraints
				  other than car beds.
S5.2.1.1 Except as provided in S5.2.1.2, each child restraint
				  system other than a car bed shall provide restraint against rearward movement
				  of the head of the child (rearward in relation to the child) by means of a
				  continuous seat back which is an integral part of the system and which-
(a) Has a height, measured along the system seat back surface
				  for the child in the vertical longitudinal plane passing through the
				  longitudinal centerline of the child restraint system for the lowest point on
				  the system seating surface that is contacted by the buttocks of the seated
				  dummy, as follows:
Weight1 (in
						  pounds)
Height1 (in
						  inches)
Less than 20 1b.
18
20 lb. or more, but not more than 40 1b.
20
More than 40 1b.
22
1When a child restraint system is
				  recommended under S5.5(f) for use by children of the above weights.
2The height of the portion of the
				  system seat back providing head restraint shall not be less than the
				  above.
(b) Has a width of not less than 8 inches, measured in the
				  horizontal plane at the height specified in paragraph (a) of this section.
				  Except that a child restraint system with side supports extending at least 4
				  inches forward from the padded surface of the portion of the restraint system
				  provided for support of the child's head may have a width of not less than 6
				  inches, measured in the horizontal plane at the height specified in paragraph
				  (a) of this section.
(c) Limits the rearward rotation of the test dummy head so
				  that the angle between the head and torso of the dummy specified in S7 when
				  tested in accordance with S6.1 is not more than 45 degrees greater than the
				  angle between the head and torso after the dummy has been placed in the system
				  in accordance with S6.1.2.3 and before the system is tested in accordance with
				  S6.1.
S5.2.1.2 A front-facing child restraint system is not
				  required to comply with S5.2.1.1 if the target point on either side of the
				  dummy's head is below a horizontal plane tangent to the top of the standard
				  seat assembly when the dummy is positioned in the system and the system is
				  installed on the assembly in accordance with S6.1.2.
S5.2.2
Torso impact protection.
Each child
				  restraint system other than a car bed shall comply with the applicable
				  requirements of S5.2.2.1 and S5.2.2.2.
S5.2.2.1
(a) The system surface provided for the support of the
				  child's back shall be flat or concave and have a continuous surface area of not
				  less than 85 square inches.
(b) Each system surface provided for support of the side of
				  the child's torso shall be flat or concave and have a continuous surface of not
				  less than 24 square inches for systems recommended for children weighing 20
				  pounds or more, or 48 square inches for systems recommended for children
				  weighing less than 20 pounds.
(c) Each horizontal cross section of each system surface
				  designed to restrain forward movement of the child's torso shall be flat or
				  concave and each vertical longitudinal cross section shall be flat or convex
				  with a radius of curvature of the underlying s
S5.2.2.2 Each forward facing child restraint system shall
				  have no fixed or movable surface directly forward of the dummy and intersected
				  by a horizontal line parallel to the SORL and passing through any portion of
				  the dummy, except for surfaces which restrain the dummy when the system is
				  tested in accordance with S6.1.2.1.2 so that the child restraint system shall
				  conform to the requirements of S5.1.2 and S5.1.3.1.
55.2.3
Head impact protection.
55.2.3.1 Each child restraint system, other than a child
				  harness, which is recommended under S5.5.2(f) for children weighing less than
				  20 pounds shall comply with S5.2.3.2.
55.2.3.2 Each system surface, except for protrusions that
				  comply with S5.2.4, which is contactable by the dummy head when the system is
				  tested in accordance with S6.1 shall be covered with slow recovery, energy
				  absorbing material with the following characteristics:
(a) A 25 percent compression-deflection resistance of not
				  less than 0.5 and not more than 10 pounds per square inch when tested in
				  accordance with S6.3.
(b) A thickness of not less than 1/2 inch for materials
				  having a 25 percent compression-deflection resistance of not less than 1.8 and
				  not more than 10 pounds per square inch when tested in accordance with S6.3.
				  Materials having a 25 percent compression-deflection resistance of less than
				  1.8 pounds per square inch shall have a thickness of not less than 3/4
				  inch.
55.2.4
Protrusion limitation.
Any portion of
				  a rigid structural component within or underlying a contactable surface, or any
				  portion of a child restraint system surface that is subject to the requirements
				  of S5.2.3 shall, with any padding or other flexible overlay material removed,
				  have a height above any immediately adjacent restraint system surface of not
				  more than 3/8 inch and no exposed edge with a radius of less than 1/4
				  inch.
S5.3
Installation.
S5.3.1 Each child restraint system shall have no means
				  designed for attaching the system to a vehicle seat cushion or vehicle seat
				  back and no component (except belts) that is designed to be inserted between
				  the vehicle seat cushion and vehicle seat back.
S5.3.2 When installed on a vehicle seat, each child restraint
				  system, other than child harnesses, shall be capable of being restrained
				  against forward movement solely by means of a Type I seat belt assembly
				  (defined in S571.209) that meets Standard No. 208 (S571.208), or by means of a
				  Type I seat belt assembly plus one additional anchorage strap that is supplied
				  with the system and conforms to S5.4.
S5.3.3
Car beds.
Each car bed shall be
				  designed to be installed on a vehicle seat so that the car bed's longitudinal
				  axis is perpendicular to a vertical longitudinal plane through the longitudinal
				  axis of the vehicle.
S5.4
Belts, belt buckles, and belt
				  webbing.
S5.4.1
Performance requirements.
The webbing
				  of belts provided with a child restraint system and used to attach the system
				  to the vehicle or to restrain child within the system shall-
(a) After being subjected to abrasion as specified in +
				  5.1(d) or 5.3(c) of FMVSS 209 + 571.209), have a breaking strength of not less
				  than 75 percent of the strength of the unabraded webbing when tested in
				  accordance with S5.1(b) of FMVSS 209.
(b) Meet the requirements of S4.2 (e) through (h) of FMVSS
				  No. 209 (S571.209); and
(c) If contactable by the test dummy torso when the system is
				  tested in accordance with S6.1, have a width of not less than 1 1/2 inches when
				  measured in accordance with S5.4.1.1.
S5.4.1.1
Width test procedure.
Condition the
				  webbing for 24 hours in an atmosphere of any relative humidity between 48 and
				  67 percent, and any ambient temperature between 70 and 77 F. Measure belt
				  webbing width under a tension of 5 pounds applied lengthwise.
S5.4.2
Belt buckles and belt adjustment
				  hardware.
Each belt buckle and item of belt adjustment hardware used
				  in a child restraint system shall conform to the requirements of S4.3(a) and
				  S4.3(b) of FMVSS No. 209 (S571.209).
S5.4.3
Belt Restraint.
S5.4.3.1
General.
Each belt that is part of
				  a child restraint system and that is designed to restrain a child using the
				  system shall be adjustable to snugly fit any child whose height and weight are
				  within the ranges recommended in accordance with S5.5.2(f) and who is
				  positioned in the system in accordance with the instructions required by
				  S5.6.
S5.4.3.2
Direct restraint.
Each belt that is
				  part of a child restraint system and that is designed to restrain a child using
				  the system and to attach the system to the vehicle shall, when tested in
				  accordance with S6.1, impose no loads on the child that result from the mass of
				  the system or the mass of the seat back of the standard seat assembly specified
				  in S7.3.
S5.4.3.3
Seating Systems.
Except for child
				  restraint systems subject to S5.4.3.4, each child restraint system that is
				  designed for use by a child in a seated position and that has belts designed to
				  restrain the child, shall, with the test dummy specified in S7 positioned in
				  the system in accordance with S6.1.2.3 provide:
(a) upper torso restraint in the form of:
(i) belts passing over each shoulder of the child, or
(ii) a fixed or movable surface that complies with
				  S5.2.2.1(c), and
(b) lower torso restraint in the form of:
(i) a lap belt assembly making an angle between
				  45o and 90o with the
				  child restraint seating surface at the lap belt attachment points, or
(ii) a fixed or movable surface that complies with
				  S5.2.2.1(c), and
(c) in the case of each seating system recommended for
				  children over 20 pounds, crotch restraint in the form of:
(i) a crotch belt connectable to the lap belt or other device
				  used to restrain the lower torso, or
(ii) a fixed or movable surface that complies with
				  S5.2.2.1(c).
S5.4.3.4
Harnesses.
Each child harness
				  shall:
(a) Provide upper torso restraint, including belts passing
				  over each shoulder of the child;
(b) Provide lower torso restraint by means of lap and crotch
				  belt; and
(c) Prevent a child of any height for which the restraint is
				  recommended for use pursuant to S5.5.2(f) from standing upright on the vehicle
				  seat when the child is placed in the device in accordance with the instructions
				  required by S5.6.
S5.4.3.5
Buckle Release.
Any buckle in a
				  child restraint system belt assembly designed to restrain a child using the
				  system, when tested in accordance with S6.2, shall not release when a force of
				  not more than 12 pounds is applied before the test specified in S6.1, and (b)
				  release when a force of not more than 20 pounds is applied after the test
				  specified in S6.1.
S5.5
Labeling.
S5.5.1 Each child restraint system shall be permanently
				  labeled with the information specified in S5.5.2(a) through (k).
S5.5.2 The information specified in paragraphs (a)-(k) of
				  this section shall be stated in the English language and lettered in letters
				  and numbers that are not smaller than 10 point type and are on a contrasting
				  background.
(a) The model name or number of the system.
(b) The manufacturer's name. A distributor's name may be used
				  instead if the distributor assumes responsibility for all duties and
				  liabilities imposed on the manufacturer with respect to the system by the
				  National Traffic and Motor Vehicle Safety Act, as amended.
(c) The statement: "Manufactured in __________," inserting
				  the month and year of manufacture.of not less than 2 inches.
(d) The place of manufacture (city and state, or foreign
				  country). However, if the manufacturer uses the name of the distributor, then
				  it shall state the location (city and state, or foreign country) of the
				  principal offices of the distributor.
(e) The statement: "This child restraint system conforms to
				  all applicable Federal motor vehicle safety standards."
(f) One of the following statements, inserting the
				  manufacturer's recommendations for the maximum weight and height of children
				  who can safely occupy the system:
(i) This infant restraint is designed for use by children who
				  weigh ________ pounds or less and whose height is ________ inches or less;
				  or
(ii) This child restraint is designed for use only by
				  children who weigh between ________ and ________ pounds and whose height is
				  ________ inches or less and who are capable of sitting upright alone; or
(iii) This child restraint is designed for use only by
				  children who weigh between ________and ________ pounds and are between ________
				  and ________ inches in height.
(g) The following statement, inserting the location of the
				  manufacturer's installation instruction booklet or sheet on the restraint:
WARNING! FAILURE TO FOLLOW EACH OF THE FOLLOWING INSTRUCTIONS
				  CAN RESULT IN YOUR CHILD STRIKING THE VEHICLE'S INTERIOR DURING A SUDDEN STOP
				  OR CRASH.
SECURE THIS CHILD RESTRAINT WITH A VEHICLE BELT AS SPECIFIED
				  IN THE MANUFACTURER'S INSTRUCTIONS LOCATED ______________.
(h) In the case of each child restraint system that has belts
				  designed to restrain children using them:
SNUGLY ADJUST THE BELTS PROVIDED WITH THIS CHILD RESTRAINT
				  AROUND YOUR CHILD.
(i) In the case of each child restraint system which is not
				  intended for use in motor vehicles at certain adjustment positions, the
				  following statement, inserting the manufacturer's adjustment
				  restrictions.
DO NOT USE THE_ADJUSTMENT POSITION(S) OF THIS CHILD RESTRAINT
				  IN A MOTOR VEHICLE.
(j) In the case of each child restraint system equipped with
				  an anchorage strap, the statement:
SECURE THE TOP ANCHORAGE STRAP PROVIDED WITH THIS CHILD
				  RESTRAINT AS SPECIFIED IN THE MANUFACTURER'S INSTRUCTIONS.
(k) In the case of each child restraint system which can be
				  used in a rear-facing position, one of the following statements:
(i) PLACE THIS CHILD RESTRAINT IN REAR-FACING POSITION WHEN
				  USING IT WITH AN INFANT; or
(ii) PLACE THIS INFANT RESTRAINT IN A REAR-FACING POSITION
				  WHEN USING IT IN THE VEHICLE.
(l) An installation diagram showing the child restraint
				  system installed in the right front outboard seating position equipped with a
				  continuous-loop lap/shoulder belt and in the center rear seating position as
				  specified in the manufacturer's instructions.
S5.5.3 The information specified in S5.5.2 (g)-(k) shall be
				  located on the child restraint system so that it is visible when the system is
				  installed as specified in S5.6.
S5.6
Installation instructions.
Each child
				  restraint system shall be accompanied by printed instruction in the English
				  language that provide a step-by-step procedure, including diagrams, for
				  installing the system in motor vehicles, securing the system in the vehicles,
				  positioning a child in the system, and adjusting the system to fit the
				  child.
S5.6.1 The instructions shall state that the rear center
				  seating position is the safest seating position in most vehicles for installing
				  a child restraint system.
S5.6.2 The instructions shall specify in general terms the
				  types of vehicle, seating positions, and vehicle lap belts with which the
				  system can or cannot be used.
S5.6.3 The instructions shall explain the primary
				  consequences of not following the warnings required to be labeled on the child
				  restraint system in accordance with S5.5.2 (g)-(k).
S5.6.4 The instructions for each car bed shall explain that
				  the car bed should position in such a way that the child's head is near the
				  center of the vehicle.
S5.6.5 The instructions shall state that child restraint
				  systems should be securely belted to the vehicle, even when they are not
				  occupied, since in a crash an unsecured child restraint system may injure other
				  occupants.
S5.6.6 Each child restraint system shall have a location on
				  the restraint for storing the manufacturer's instructions.
S5.7
Flammability.
Each material used in a
				  child restraint system shall conform to the requirements of S4 of FMVSS No. 302
				  (S571.302).
S6
Test Conditions and Procedures.
S6.1
Dynamic Systems Test.
S6.1.1
Test Conditions.
S6.1.1.1 The test device is the standard seat assembly
				  specified in S7.3. It is mounted on a dynamic test platform so that the center
				  SORL of the seat is parallel to the direction of the test platform travel and
				  so that movement between the base of the assembly and the platform is
				  prevented. The platform is instrumented with an accelerometer and data
				  processing system having a frequency response of 60 Hz channel class as
				  specified in Society of Automotive Engineers Recommended Practice J211a
				  "Instrumentation for Impact Tests." The accelerometer sensitive axis is
				  parallel to the direction of the test platform travel.
56.1.1.2 The tests are frontal barrier impact simulations and
				  for-
(a) Test configuration I specified in S6.1.2.1.1, are at a
				  velocity change of 30 mph with the acceleration of the test platform entirely
				  within the curve shown in Figure 2.
(b) Test configuration II specified in S6.1.2.1.2, are at a
				  velocity change of 20 mph with the acceleration of the test platform entirely
				  within the curve shown in Figure 3.
S6.1.1.3 Type I seat belt assemblies meeting the requirements
				  of Standard No. 209 (S571.209) and having webbing with a width of not more than
				  2 inches are attached, without the use of retractors or reels of any kind, to
				  the seat belt anchorage points (illustrated in Figure 1B) provided on the
				  standard seat assembly.
56.1.1.4 Performance tests under S6.1 are conducted at any
				  ambient temperature from 66o to
				  78o F and at any relative humidity from 10 percent
				  to 70 percent.
S6.1.2
Dynamic Test Procedure.
S6.1.2.1
Test Configuration.
S6.1.2.1.1
Test Configuration I.
In the case
				  of each child restraint system, install a new child restraint system at the
				  center seat position of the standard seat assembly in accordance with the
				  manufacturer's instructions provided in accordance with S5.6 with the
				  system.
S6.1.2.1.2
Test Configuration II.
In the
				  case of each child restraint system, other than a child harness, which is
				  equipped with an anchorage belt or a fixed or movable surface described in
				  S5.2.2.2, install a new child restraint system at the center seat position of
				  the standard seat assembly using only the standard seat lap belt to secure the
				  system to the standard seat.
56.1.2.2 Tighten all belts used to attach the child restraint
				  system to the standard seat assembly to a tension of not less than 12 pounds
				  and not more than 15 pounds, as measured by a load cell used on the webbing
				  portion of the belt.
S6.1.2.3 Place in the child restraint any dummy specified in
				  S7 for testing systems for use by children of the heights and weights for which
				  the system is recommended in accordance with S5.6.
S6.1.2.3.1 When placing the 3-year-old test dummy in child
				  restraint systems other than car beds, position the test dummy according to the
				  instructions for child positioning provided by the manufacturer with the system
				  in accordance with S5.6 while conforming to the following:
(a) Place the test dummy in the seated position within the
				  system with the midsagittal plane of the test dummy head coincident with the
				  center SORL of the standard seating assembly, holding the torso upright until
				  it contacts the system design seating surface.
(b) Extend the arms of the test dummy as far as possible in
				  the upward vertical direction. Extend the legs of the dummy as far as possible
				  in the forward horizontal direction, with the dummy feet perpendicular to the
				  centerline of the lower legs.
(c) Using a flat square surface with an area of 4 square
				  inches, apply a force of 40 pounds, perpendicular to the plane of the back of
				  the standard seat assembly, first against the dummy crotch and then at the
				  dummy thorax in the midsagittal plane of the dummy. For a child restraint
				  system with a fixed or movable surface described in S5.2.2.2 which is being
				  tested under the conditions of test configuration II, do not attach any of the
				  child restraint belts unless they are an integral part of the fixed or movable
				  surface. For all other child restraint systems and for a child restraint system
				  with a fixed or movable surface which is being tested under the conditions of
				  test configuration I, attach all appropriate child restraint belts and tighten
				  them as specified in S6.1.2.4. Attach all appropriate vehicle belts and tighten
				  them as specified in S6.1.2.2. Position each movable surface in accordance with
				  the manufacturer's instructions provided in accordance with S5.6.
(d) After the steps specified in paragraph (c) of this
				  section, rotate each dummy limb downwards in the plane parallel to its
				  midsagittal plane until the limb contacts a surface of the child restraints
				  system or the standard seat. Position the limbs, if necessary, so that limb
				  placement does not inhibit torso or head movement in tests conducted under S6.
S6.1.2.3.2. When placing the 6-month-old dummy in child
				  restraint systems other than car beds, position the test dummy according to the
				  instructions for child positioning provided with the system by the manufacturer
				  in accordance with S5.6 while conforming to the following:
(a) With the dummy in the supine position on a horizontal
				  surface, and while preventing movement of the dummy torso by placing a hand on
				  the center of the torso, rotate the dummy legs upward by lifting the feet until
				  the legs contact the upper torso and the feet touch the head, and then slowly
				  release the legs but do not return them to the flat surface.
(b) Place the dummy in the child restraint system so that the
				  back of the dummy torso contacts the back support surface of the system. For a
				  child restraint system with a fixed or movable surface described in S5.2.2.2
				  which is being tested under the conditions of test configuration II, do not
				  attach any of the child restraint belts unless they are an integral part of the
				  fixed or movable surface. For all other child restraint systems and for a child
				  restraint system with a fixed or movable surface which is being tested under
				  the conditions of test configuration I, attach all appropriate child restraint
				  belts and tighten them as specified in S6.1.2.4. Attach all appropriate vehicle
				  belts and tighten them as specified in S6.1.2.2. Position each movable surface
				  in accordance with the manufacturer's instructions provided in accordance with
				  S5.6. If the dummy's head does not remain in the proper position, it shall be
				  taped against the front of the seat back surface of the system by means of a
				  single thickness of 1/4-inch-wide paper masking tape placed across the center
				  of the dummy face.
(c) Position the dummy arms vertically upwards and then
				  rotate each arm downward toward the dummy's lower body until it contacts a
				  surface of the child restraint system or the standard seat assembly, ensuring
				  that no arm is restrained from movement in other than the downward direction,
				  by any part of the system or the belts used to anchor the system to the
				  standard seat assembly.
S6.1.2.3.3 When placing the 6-month-old dummy or 3-year-old
				  dummy in a car bed, place the dummy in the car bed in the supine position with
				  its midsagittal plane perpendicular to the center SORL of the standard seat
				  assembly and position the dummy within the car bed in accordance with
				  instructions for child positioning provided with the car bed by its
				  manufacturer in accordance with S5.6.
S6.1.2.4 If provided, shoulder and pelvic belts that directly
				  restrain the dummy shall be adjusted as follows:
Tighten the belts until a 2-pound force applied (as
				  illustrated in figure 5) to the webbing at the top of each dummy shoulder and
				  to the pelvic webbing two inches on either side of the torso midsagittal plane
				  pulls the webbing 1/4 inch from the dummy.
S6.1.2.5 Accelerate the test platform to simulate frontal
				  impact in accordance with S6.1.1.2(a) or S6.1.1.2(b), as appropriate.
S6.1.2.6 Measure dummy excursion and determine conformance to
				  the requirements specified in S5.1 as appropriate.
S6.2
Buckle release test procedure.
The
				  buckles on the belts of each child restraint system equipped with buckled belts
				  shall be tested in accordance with S6.2.1 through S6.2.5.
S6.2.1 Install the child restraint system on a standard seat
				  assembly and place the appropriate test dummy in the system in accordance with
				  S6.1.2.1 through S6.1.2.4.
S6.2.2 Tie a self-adjusting sling to each ankle and wrist of
				  the dummy in the manner illustrated in figure 4.
S6.2.3 Pull the sling horizontally in the manner illustrated
				  in figure 4 and parallel to the center SORL of the seat assembly and apply a
				  force of 20 pounds in the case of a system tested with a 6 month-old dummy and
				  45 pounds in the case of a system tested with a 3 year-old dummy.
S6.2.4 While applying the force specified in S6.2.3, operate
				  the buckle release mechanism in the manner specified in S5.2(d) of Standard No.
				  209 (S571.209).
S6.2.5 Measure the force required to release the
				  buckle.
S6.3
Head impact protection-energy absorbing material
				  test procedure.
S6.3.1 Prepare and test specimens of the energy absorbing
				  material used to comply with S5.2.3 in accordance with the applicable 25
				  percent compression-deflection test described in the American Society for
				  Testing and Materials (ASTM) Standard D1056-73, "Standard Specification for
				  Flexible Cellular Materials-Sponge or Expanded Rubber," or D1564-71 "Standard
				  Method of Testing Flexible Cellular Materials-Slab Urethane Foam" or D1565-76
				  "Standard Specification for Flexible Cellular Materials-Vinyl Chloride Polymer
				  and Copolymer open-cell foams."
S7 Test dummies.
S7.1
Six-month-old dummy.
An unclothed
				  "Six-month-old Size Manikin" conforming to Subpart D of Part 572 of this
				  chapter is used for testing a child restraint system that is recommended by its
				  manufacturer in accordance with S5.6 for use by children in a weight range that
				  includes children weighing not more than 20 pounds.
S7.2
Three-year-old dummy.
A three-year-old
				  dummy conforming to Subpart C of Part 572 of this chapter is used for testing a
				  child restraint that is recommended by its manufacturer in accordance with S5.6
				  for use by children in a weight range that includes children weighing more than
				  20 pounds.
S7.2.1 Before being used in testing under this standard, the
				  dummy is conditioned at any ambient temperature from
				  66o F to 78o F and at any
				  relative humidity from 10 percent to 70 percent for at least 4 hours.
S7.2.2 When used in testing under this standard, the dummy is
				  clothed in thermal knit waffle-weave polyester and cotton underwear, a size 4
				  long-sleeved shirt weighing 0.2 pounds, a size 4 pair of long pants weighing
				  0.2 pounds and cut off just far enough above the knee to allow the knee target
				  to be visible, and size 7M sneakers with rubber toe caps, uppers of dacron and
				  cotton or nylon and total weight of 1 pound. Clothing other than the shoes is
				  machine-washed in 160o F to
				  180o F water and machine-dried at
				  120o F to 140o F for 30
				  minutes.
S7.3
Standard seat assembly.
The standard
				  seat assembly used in testing under this standard is a simulated vehicle bench
				  seat, with three seating positions, which is described in Drawing Package
				  SAD-100-1000 and consists of drawings and a bill of materials.
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REFERENCE MATERIALS
AVAILABILITY: The materials incorporated by reference, other
				  than acts of Congress and matter published elsewhere in the Federal Register,
				  are available as follows:
1) American Association of Textile Chemists and Colorists
				  (AATCC)
P. O. Box 12215
Research Triangle Park, NC 27709
2) American National Standards Institute (ANSI)
1430 Broadway
New York, NY 10018
3) American Society for Testing and Materials (ASTM)
1916 Race Street
Philadelphia, PA 19103
4) General Services Administration (GSA)
Superintendent of Documents
U. S. Government Printing Office
Washington, DC 20402
(5) Military Specifications
Naval Publication and Forms Center
5801 Tabor Avenue
Philadelphia, PA 19120
6) National Health Survey Data
Superintendent of Documents
U. S. Government Printing Office
Washington, DC 20402
7) National Highway Traffic Safety Administration (NHTSA)
Keuffle and Esser Company
15121 North Danville Street
Arlington, VA 22201
8) Society of Automotive Engineers (SAE)
400 Commonwealth Drive
Warrendale, PA 15096
9) Truck Body and Equipment Association, Inc.
Suite 1220
5530 Wisconsin Avenue
Washington, DC 20015