ECE/TRANS/WP.29/GRSP/2019/26

3.4.1 3.1.4.1. At each designated seating position, if the seat back is adjustable, it is set at an initial inclination position closest to 25° from the vertical, as measured by the three-dimensional H-point machine, as specified in Annex 1312. If there is more than one inclination position closest to 25° from the vertical, set the seat back inclination to the position closest to and rearward of 25°. 3.4.2. 3.1.4.2. Using any control that primarily moves the entire seat vertically, place the seat in the lowest position. Using any control that primarily moves the entire seat in the fore and aft directions, place the seat midway between the full forward most and full rearward rearmost position. If an adjustment position does not exist midway between the full forward most and full rearward rearmost positions, the closest adjustment position to the rear of the midpoint is used. 3.4.3. 3.1.4.3. If the seat cushion adjusts independently of the seat back, position the seat cushion such that the highest H-point position is achieved with respect to the seat back, as measured by three-dimensional H-point machine as specified in Annex 1312. If the specified position of the H-point can be achieved with a range of seat cushion inclination angles, adjust the seat inclination such that the most forward part of the seat cushion is at its lowest position with respect to the most rearward part. 3.4.4. 3.1.4.4. If the head restraint is adjustable, adjust the top of the head restraint to a position midway between the lowest position of adjustment and the highest position of adjustment. If an adjustment position midway between the lowest and the highest position does not exist, adjust the head restraint to a position below and nearest to midway between the lowest position of adjustment and the highest position of adjustment. 3.4.5. 3.1.4.5. Adjustable lumbar supports are positioned so that the lumbar support is in its lowest retracted or deflated position.

3.5. 3.1.5. Seat Belt Adjustment

Prior to placing the seat belt around the test dummy, fully extend the webbing from the seat belt retractor(s) and release it three times to remove slack. If an upper adjustable seat belt turning loop (adjustable seat belt D-ring anchorage) exists, place it in the adjustment position closest to the mid-position. If an adjustment position does not exist midway between the highest and lowest position, the closest adjustment position above the midpoint is used.

3.6. 3.1.6. Dress and adjust each test dummy as follows:

Each test dummy is clothed in a form fitting cotton stretch short sleeve shirt with above-the-elbow sleeves and above-the-knee length shorts. The mass of the shirt or shorts shall not exceed 0.06 kg each. Each foot of the test dummy is equipped with a size 11XW shoe whose mass is 0.51 ± 0.09 kg 0.57 ± 0.1 kg. Limb joints are set at 1g, barely restraining the weight of the limb when extended horizontally. Leg joints are adjusted with the torso in the supine position.

3.7. 3.1.7. Hybrid III Test dummy positioning procedure

Place a test dummy at each designated seating position equipped with a head restraint.

3.7.1. 3.1.7.1. Head

The transverse instrumentation platform of the head is level within 1/2 degree. To level the head of the test dummy, the following sequence is followed. First, adjust the position of the H-point to level the transverse instrumentation 1