GB/T 39423-2020Road vehicles. Collection of accident data for evaluation of occupant restraint performance (English PDF)

5.4 Evaluation of knee protection system

For the evaluation of the knee protection system, the following information shall be recorded:

a) The type of knee protection (such as knee pads, airbags);

b) The deformed position of the knee space;

c) The deformation corresponding to the collision (whether it is in contact with the occupant);

d) The position where the occupant's knee touches.

5.5 Steering column and steering wheel

For the steering column and steering wheel, the following information shall be recorded:

a) The type of steering column and steering wheel (such as diameter, number of spokes, whether it is equipped with energy absorbing device);

q) The configuration and activation status of the inflatable seat belt;

r) The configuration and activation status of the pre-collision seat belt pretensioner;

s) The function type of the seat belt system (non-early warning, early warning, pre-early warning).

5.7 Use of seat belt restraint

For the use of seat belt restraint, the following information shall be recorded:

a) The correctness of the use of seat belt system;

b) The wearing type of the seat belt system (active, passive, etc.);

c) The basis for judging whether to use seat belts;

d) The failure of the seat belt during the collision (if it fails);

e) The results of the investigation into the use of seat belts in the police report.

5.8 Airbag system

The number of airbags in each seat position and their deployment shall be recorded, including the following information for each airbag:

a) Type of airbag (unequipped, original, replaced, refurbished).

b) The size of the air bag, in centimeters (for the oval airbag, measure its long axis and short axis dimensions; for the round airbag, measure its diameter; for the square airbag, measure its length and width).

c) Activation and pop-up conditions.

d) The activable status of airbag as set by the user;

e) Airbag position:

1) The middle position of the steering wheel;

2) Dashboard;

3) The lower part of the dashboard (knee airbag);

4) Side doors, rear roof side panels;

5) Side of the seat (inside/outside);

6) The position of the occupant's head on the upper side beam;

a) Height and weight;

b) Age and gender;

c) The specific dimensions of the occupant (such as sitting height, hip-to-knee length, knee-to-foot length, arm length, etc.);

d) Past medical history (cardiovascular, hearing, etc.) and previous physical condition or disability.

6.2.2 Occupant clothing

The following occupant clothing information shall be recorded:

a) The style and material of the top (length, thickness);

b) The style and material of the bottom garment (length, thickness);

c) Shoes (size and heel height).

6.2.3 Occupant body posture

The following occupant body posture information shall be recorded:

a) Operations that may cause the occupant to leave the position (such as braking) before the collision;

b) Occupant posture (sitting, lying, kneeling, standing);

c) The position of the occupant's torso and head relative to the normal posture during the collision;

d) The position of the lower limbs of the occupant at the time of the collision;

e) The position of the upper limbs of the occupant at the time of the collision;

f) The rotation of the occupant's head during the collision;

g) Whether the occupant supports his/her body with his arms;

h) Whether the occupant supports his/her body with his legs;

i) The rotation of the occupant's body during the collision;

j) The position of the occupant after the collision;

k) Vision aids (glasses, contact lenses) used;

l) Items placed on the hands or legs of the occupant.

7.2.1 Internal injury-causing contacts

The following information shall be recorded:

a) Knee pads;

b) Seat cushions and seat backs.

7.2.2 Constraint system's injury-causing contacts

The following information shall be recorded:

a) Constraint system components, such as webbing;

b) The airbag on the driver's side (front airbag, side airbag, side air curtain, etc.);

c) Airbags on the front passenger side (front airbags, side airbags, side air curtains, etc.);

d) Rear airbags (front airbags, side airbags, side air curtains, etc.).

7.2.3 Indirect contacts

Records shall include the gas filled in the airbag or other conditions.

7.2.4 Other injury-causing contacts

For an in-depth accident investigation, all other injury-causing contacts shall also be recorded.